General Specifications SR Recorder LF 4D8B-4U The SR is a small compact recorder using a mm (4 inch) wide paper. The family consists of,,3 pen and a 6 dot model. Its input is universal, which means that it is freely programmable direct voltage/current, Thermo-couple, Resistance Temperature Detector, digital input, etc. In addition to analog recording, digital data like date & time, measured values, units, scale values, chart speed, alarms, etc. can also be printed. High reliability is realized by YOKOGAWA s contact free technology, such as high breakdown voltage semiconductor relays, and DC brushless servomotors. Furthermore the SR has a short case of only mm. The SR can be used as a monitoring device and as a quality control instrument in many industrial automation applications. STANDARD SPECIFICATIONS General Specifications Construction Mounting: Flush Panel Mounting (vertical), mounting next to each other (horizontal and vertical). Mounting may be inclined up to 3, rear below front (with horizontal base). Allowable panel thickness: to 6mm (.78 to. inch) Material: Case: drawn steel, front door: aluminium die casting. Finish: Case and door-frame: lamp black (Mansell.8Y.5/.4 or equivalent) Door: Splash and dust-proof (based on DIN 45-IP54). Dimensions: 44 44 mm (see dimensional drawings) Weight (approx.): pen 3.kg (6.8lbs) pen 3.3kg (7.3lbs) 3 pen 3.5kg (7.7lbs) 6 dot 3.4kg (7.5lbs) Model,, and 3 pen, 6 dot-model. SR 6 dot-model Input Inputs: DCV: Direct Current Voltage input mv to V range. TC: Thermo couple. RTD: Resistance Temperature Detector. DI: Digital Input (contact or DC Voltage, TTL level). DCA: Direct Current Input (using external shunt resistor (Ω, Ω, 5Ω) ) Measuring range: selectable per channel Input Type Range Measuring Range DC V mv 6mV mv V 6V V -. to.mv -6. to 6.mV -. to.mv -. to.v -6. to 6.V -. to.v T.EPS LF 4D8B-4U Copyright Oct. 997(YK) st Edition Oct. 997(YG)
Input Type TC Range R * S * B * K * E * J * T * N * W * L *3 U *3 Measuring Range C. to 76. C. to 76. C. to 8. C -. to 37. C -. to 8. C -. to. C -. to 4. C. to 3. C. to 35. C -. to 9. C -. to 4. C Measuring Range F 3 to 3 F 3 to 3 F 3 to 338 F -38 to 498 F -38. to 47. F -38. to. F -38. to 75. F 3 to 37 F 3 to 499 F -38. to 65. F -38. to 75. F Linear scaling: Available for DCV range. Scaling limits: -9999 to Data display & printout range: -9999 to Decimal point: user selectable (should be specified when entering scale value) Unit: user settable, up to 6 characters (alphanumerical & special characters). Square root: Available for DCV range. Scaling limits: -9999 to Data display & printout range: -9999 to Decimal point: user selectable Unit: user settable, up to 6 characters (alphanumerical & special characters). Offset function: Ranges: DCV, TC, RTD, SCL Compensation range: within % of recording span Input Type RTD DI (Digital Input) Range Pt *4 JPt *4 Voltage Input Contact Input Measuring Range C -. to 6. C -. to 55. C Measuring Range F -38. to. F -38. to. F Input Type Range Measuring Range Less than.4v : OFF ; More than.4v : ON (TTL) Contact ON / OFF * R, S, B, K, E, J, T, N: IEC 584- (995), JIS C 6-995 * W: W-5%Re/W-6%Re (Hoskins Mfg. Co.) *3 L: Fe-CuNi, DIN 437, U: Cu-CuNi, DIN 437 *4 Pt: IEC 75-995, JPt: JIS C 64-989 T.EPS Measurement Interval: Pen model: 5ms/channel. Dot printing model: 5sec/6channel A/D Integration Time: ms(5hz)or 6.7ms (6Hz), automatically selected depending on the power supply frequency for pen model only. ms integration time for dot printing model only TC Burnout: ON/OFF selectable (per channel). Burnout upscale/downscale selectable (common for all channels) Normal: less than kω, burnout: more than MΩ. Measuring current: approx. na. Filter: Pen model: Signal damping (ON/OFF selectable per channel; in case of ON: time constant, 5, sec). Dot printing model: Moving average (ON/OFF selectable per channel; in case of ON: averaging times from to 6 scans) Calculation: Interchannel difference: Between any two channels, however reference channel number must be less than measuring channel number. Available for DCV, TC, and RTD range. Both channels must have same range. Recording and Printing Recording Method: Pen model: Disposable felt pens, Plotter pen Dot printing model: 6 color wire dot. Pen Offset Compensation: ON/OFF selectable (Pen model only) Effective Recording Width: mm Chart: Plain-paper Z-fold chart (6m) Step Response Time (pen): Less than sec (acc. to IEC TC85 method). Recording Period: Pen model: Continuous for each channel. Dot printing model: Max. sec/6channel, AUTO/FIX selectable AUTO: Analog recording interval is depending on the chart speed FIX: Analog recording interval is set to shortest period Chart speed: User can select the chart speed by front panel key as shown below. Pen model (4 speeds): (mm/h) 5 5 3 4 5 6 75 8 9 5 6 8 4 3 36 375 45 6 7 75 9 5 8 4 3 36 45 48 54 6 7 9 8 Dot printing model (8 speeds): 5 5 6 75 8 9 6 8 4 45 6 7 75 3 3 9 4 36 T3.EPS (mm/h) 5 5 375 5 T4.EPS All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
Chart Speed Change: speed, speed change by remote control signals (option). Chart Speed Accuracy: within ±.% (for recordings longer than mm, related to the grid of the chart paper) Relation between Chart Speed and Printout: Pen model: Chart Speed Periodic Printout Alarm Printout to 5mm / h Printout Printout 8 to mm / h No Printout No printout Dot printing model: Chart Speed to mm / h to 5mm / h Channel No. Printout No Printout Periodic Printout Printout No printout T5.EPS Alarm Printout Printout No printout Relation between chart speed and printing intervals of periodic printouts: Pen model: Chart Speed, 5mm / h, 5, 3mm / h 4, 5, 6mm / h 75, 8, 9,, mm / h 5, 6, 8mm / h, 4, 3mm / h 36 to 5mm / h 8 to mm / h Dot printing model: Chart Speed, 5mm / h, 5, 3mm / h 4, 5, 6, 75mm / h 8, 9, mm / h to 5mm / h Printing Interval of Periodic Printout Every 8 hours Every 4 hours Every hours Every hour Every 3 minutes Every minutes Every minutes No printout Printing Interval of Periodic Printout Every 8 hours Every 4 hours Every hours Every hour No printout Recording Colors: Pen model: pen=red, pen=green, pen3=blue, plotter pen=purple Dot printing model: ch=purple, ch=red, ch3=green, ch4=blue, ch5=brown, ch6=black (color can be assigned to any channel) Recording Format:. Analog recording: Zone recording: Span: More than 5mm (in mm steps). Partial expanded recording: Boundary position: to 99% Boundary value: Within recording span T6.EPS T7.EPS T8.EPS 3. Digital printout: Channel (dot model only): Channel number will be printed during analog recording. Approx. every 5mm this print will occur. Alarm: At the right side of the chart, ON/OFF mark CH. No., Type of alarm, ON/OFF time (h/m) will be printed. It is selectable to get ON/OFF time of alarms, or ON time, or no alarms (common for all channels). Periodic printout: At the left side of the chart, date(y/m/d), time(h/m), chart speed, scale value, and measured data of every channel will be printed. It is selectable to get ON (printout all)/on (printout date, time, chart speed)/off (no printout). Message printout: Using remote control option. Up to 5 messages. Contents: time (h/m) and message (up to 6 characters). Chart speed change printout: Printouts of the chart speed and time when the change occurs, can be made by the user. Manual printout: Using panel key or remote control option. Measured values of that moment will be printed, while trend recording will be interrupted. List printout: Listings of range and alarm setting, etc. will be printed. SET UP list printout: Listing of settings in SET UP mode will be printed. Display Display Method: LED (7 segments, + 5 characters). Digitial Display: AUTO: Channel No., kind of alarm, measured values,for each channel alternately MAN: Channel No., kind of alarm, measured values, for one specific channel DATE: Year/month/day will be displayed TIME: Hour/min will be displayed OFF: No display Other Displays: RCD: Recording in progress ALM: Shared alarm (not corresponding to any channel) Power Supply Rated Power Voltage: to 4VAC, automatically selected depending on the power supply voltage Usable power voltage ranges: 9 to 3, 8 to 5VAC Rated Power Frequency: 5/6 Hz, automatically selected All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
Power Consumption: (approx.) 3 pen 6 dot * : for stable input Alarm V AC Power Source 6VA* 5VA* 4V AC Power Source 36VA* 3VA* Maximum 7VA 5VA T9.EPS Number of levels: Up to four levels for every channel (High, Low, Delta high, Delta low). Display: Alarm status (ALM) will be displayed. Hysteresis: Approx..5% of recording span (only high, low alarm) and %, selectable (common for all channels and all levels). Other Specifications Clock: With Calendar function Clock Accuracy: ± ppm, however not including error due to turning ON/OFF power Panel Key-lock: Can be set for RCD, PRINT, FEED key Setting Data protection: Requires a password Memory backup: Lithium battery to protect setting parameters. Life is approx. ten years (at room temperature, power off, and for standard model) and is installed inside the recorder. Insulation Resistance: Each terminal to ground terminal: more than MΩ (measured at 5VDC). Dielectric Strength: Power supply to ground terminal: 5V AC (5/6Hz), min Contact output terminal to ground: 5V AC (5/6Hz), min Measuring input terminal to ground: V AC (5/6Hz), min Between measuring input terminals: V AC (5/6Hz), min (except for RTD, since b-terminal is common). Between remote control terminal to ground: 5V DC, min. Machine noise: Machine Noise Information Ordinance 3. GSGV, Jan. 8, 99: The maximum sound pressure level is equal or less than 6dB (A) according to ISO7779. Safety Standards Certified by CSA. No.. Complies with EN6- EMC Standards Complies with EN55 Group Class A Complies with EN58-4 Normal Operating Conditions Power voltage: 9 to 3, 8 to 5VAC Power frequency: 5Hz ±%, 6Hz ±% Ambient temperature: to 5 C Ambient humidity: to 8% RH (at 5 to 4 C) Vibration: to 6Hz,less than.m/s Shock: not permissible Magnetic field: less than 4AT/m (DC and 5, 6Hz) Noise: Normal Mode (5/6Hz) DCV: Peak value including signal must be less than. times the measuring range. TC: Peak value including signal must be less than. times the measuring thermal electromotive force. RTD: less than 5mV. Common Mode (5/6Hz) less than 5VAC rms. for the whole range Maximum Differential Noise between Channels (5/6Hz) Less than 5VAC rms Operating Position: Frontwards: Backwards: within 3 from horizontal Warm-up Time: Min 3 minutes after power has been turned ON. All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
5 Standard Performance Measuring and Recording Accuracy: (following specifications apply to opretion of the recorder under stabdard operation conditions: temperature 3± C, humidity 55±%RH, power supply voltage 9 to 3V, 8 to 5V AC, power supply frequency 5/6Hz ±%, warmup time at least 3 minutes, other ambient conditions like vibration should not adversely affect the reecording operation). Input DC V Range mv 6mV mv V 6V V Measuring (digital display) Max. Measurement Accuracy Recording Accuracy Resolution Resolution ±(.% of rdg+3 digits) ±(.% of rdg+ digits) ±(.% of rdg+ digits) ±(.% of rdg+ digits) ±(.3% of rdg+3 digits) ±(.3% of rdg+ digits) µv µv µv mv mv mv Measurement accuracy ±(.3% of recording span) Recording (analog) Pen model dead band:.% of recording span Dot printing model resolution:.mm TC (Does not include reference junction compensation accuracy) R S B ±(.5% of rdg+ C) but R, S: to C, ±3.7 C to 3 C, ±.5 C B: 4 to 6 C, ± C Accuracy less than 4 C is not specified. C Measurement accuracy ±(.3% of recording span) Pen model dead band:.% of recording span Dot printing model resolution:.mm K ±(.5% of rdg+.7 C) but - to - C ±(.5% of rdg+ C) E ±(.5% of rdg+.5 C) J T ±(.5% of rdg+.5 C) but J: - to - C ±(.5% of rdg+.7 C). C N ±(.5% of rdg+.7 C) W ±(.5% of rdg+ C). C L U ±(.5% of rdg+.5 C) but L: - to - C ±(.5% of rdg+.7 C). C RTD Pt JPt ±(.5% of rdg+.3 C). C Measurement accuracy ±(.3% of recording span) Pen model dead band:.% of recording span Dot model resolution:.mm T.EPS NOTE: Recording span is mm Accuracy in case of scaling : accuracy during scaling (digits)= measuring accuracy (digits) multiplier+ digits (rounded up) Where the multiplier=scaling span digits/recording span digits Example : DCV 6V range recording span :. to 5. V scaling span :. to. measuring accuracy= ±(.3% 5V+ digits) ±(.5V (5 digits)+) ±(7 digits) multiplier= digits (. to.)/4 digits (. to 5.V)=.5 Accuracy during scaling= 7 digits.5+=digits (rounded up) All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
Maximum Allowable Input Voltage: Less than VDC ranges and TC ranges: ±VDC (cont.) 6V to VDC: ±3VDC (cont.) Reference Junction Compensation Accuracy (above C) : Type R, S, B, W:± C Type K, J, E, T, N, L, U: ±.5 C Input Resistance: More than MΩ (TC, mv, 6mV, mv, V range) Approx. MΩ (6, V range). Input Source Resistance: DCV, TC input: less than kω RTD input: less than Ω/wire (Resistance is equal on all 3 wires) Input Bias Current: less than na (however, when burnout is specified for TC: na). Maximum Common Mode Voltage: 5VAC rms (5/6Hz) Maximum Differential Noise between Channels 5VAC rms (5/6Hz) Interference between Channels : db (5Ω, the deviation in the case that 3V is applied to another channel) Common Mode Rejection Ratio: db (5/6Hz ±.%, 5Ω imbalance between terminal and ground) Normal Mode Rejection Ratio: 4dB (5/6Hz ±.%) 6 RTD range: i) Effect of Ω per wire (resistances of three wire must be equal): Digital display: within ±(.% of rdg+ digit) Recording: within Digital display ±.% of recording span ii) Effect of difference of thre wires: Digital display:. C per 4mΩ (approx.) Effect of Operating Position: Digital display: within ±(.% of rdg+ digit) (within 3 backwards) Recording: within Digital display ±.% of recording span (within 3 backwards) Vibration: Effect when sine-wave motion of frequency to 6Hz and acceleration of.m/s is applied to the instrument in the direction of three axes for two hours: Digital display: within ±(.% of rdg+ digit) Recording: within Digital display ±.% of recording span Transport and Storage Conditions No malfunction will occur under these conditions, however when returning to normal operation conditions, calibration might be necessary. Temperature: -5 C to 6 C Humidity: 5 to 95% RH (no condensation) Vibration: to 6Hz 4.9m/s Shock: less than 39m/s (inside packing) Effect of Operating Conditions Effect of Ambient Temperature: Effect of ambient temperature variation of C. Digital display: within ±(.% of rdg+ digit) Recording: within Digital display ±.% of recording span (excluding RJC error) Effect of Power Supply: Effect of variation within 9 to 3V or 8 to 5VAC in rated power supply voltage: (5 or 6Hz is reference) Digital display: within ± digit Recording: within ±.% of recording span Effect of rated power frequency variation of ±Hz (VAC is reference): Digital display: within ±(.% of rdg+ digit) Recording: same as digital display Effect of Magnetic Field: Effect of AC (5/6Hz)or DC 4AT/m field: Digital display: within ±(.% of rdg+ digits) Recording: less than ±.5% of recording span Effect of radio-frequency Electromagnetic Field: Effect of 7-5MHz V/m field Digital display: within ±(5% of range + digit) Recording: within ±(5% of range) Effect of Input Source Resistance: Effect of Input Source Resistance variation of +kω: DCV range: Ranges less than V: within ±µv Ranges more than 6V: within -.% of rdg TC range: within ±µv (However ±µv when TC burnout protection is set) All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
SPECIFICATIONS OF OPTIONAL FUNCTIONS / A: Alarm Output Relay ( contacts) / A: Alarm Output Relay (4 contacts) / A3: Alarm Output Relay (6 contacts) When alarm occurs, output relay on rear terminal will be activated.. Energize/ non-energize selectable (common for all relays).. Relay contact rating: DC 5V/.A AC 5V/3A 3. Type of relay output: NO-C-NC / C3: RS-4A Communication Interface By using this communication function, setting and control of data can be done by a host-computer. Data can also be output to the host-computer.. Synchronizing format: start-stop asynchronous transmission. Specifications: conform to EIA RS-4A standard 3. Communication system: 4-wire half-duplex multi-drop connection (: N (N= to 6)) 4. Communication rate: 75, 5, 3, 6,, 4, 48, 96bps 5. Data length: 7 or 8 bit 6. Stop bit: or bit 7. Parity: Odd, even or none 8. Communication distance: Up to 5m 9. Communication mode: ASCII (control/setting/measured data) or Binary (measured data) /N: Cu, Cu5, Pt5 RTD input Cu, Cu5 and Pt5 RTD input become available. Cu, Cu5 Measurement Range RTD Measurement Input Type Range Cu (GE): α =.3855 at 5 C - to 3 C Cu (L&N): α =.385 at 5 C (-38 to 57 F) Cu (WEED): α =.386 at 5 C Cu (BAILEY): Non-Linear Cu: α =.39 at C Cu: α =.393 at C Cu5: α =.45 at C Pt5 - to 6 C (-38 to F) T.EPS Measurement / Recording Accuracy Cu (GE): α =.3855 at 5 C ±(.4% of Cu (L&N): α =.385 at 5 C rdg+. C) Cu (WEED): α =.386 at 5 C Cu (BAILEY): Non-Linear Cu: α =.39 at C Cu: α =.393 at C Cu5: α =.45 at C Pt5 Input Type Measurement Accuracy ±(.3% of rdg+.8 C) ±(.3% of rdg+.6 C) 7 Recording Accuracy Measurement Accuracy ±(.3% of Recording span) T.EPS Note: If this option is specified, Measurement Accuracy of Pt and Jpt become ±(.3% of rdg+.4 C) /N3: PR-4, Platinel TC input PR-4 and Platinel TC input become available. PR-4, Platinel Measurement Range TC PR-4 Platinel Input Type Measurement / Recording Accuracy PR-4 to 45 C 45 to 75 C 75 to C to 9 C Platinel Input Type Measurement Accuracy Not specified ±(.9% of rdg+3. C) ±(.9% of rdg+.3 C) ±(.9% of rdg+.4 C) ±(.5% of rdg+.3 C) Measurement Range to 9 C (3 to 345 F) to 4 C (3 to 55 F) /D: Temperature Unit Change Using F as temperature unit. /R: Remote Control 5 are selectable from the below mentioned remote controls. T3.EPS Recording Accuracy Measurement Accuracy ±(.3% of Recording span) Number of settings Signal Recording start/stop level Chart speed change level Message printout start * 5 trigger Manual printout start trigger T4.EPS *: Up to 5 messages can be set All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
8 MODEL AND SUFFIX CODES Model Suffix Codes SR -A SR -A SR3 -A SR6 -A Input Types - Optional Features / Note : -A, - must be specified Note : /A, /A and /A3 select only one STANDARD ACCESSORIES Description SR -pen Recorder SR -pen Recorder SR 3-pen Recorder SR 6-dot Recorder Universal input Refer to option code T5.EPS OPTIONAL ACCESSORIES Name Model Code Specification Shunt resistor 459 459 459 5Ω ±.% Ω ±.% Ω ±.% T9.EPS Name pen pen 3 pen 6 dot Z-fold chart 6 color ribbon cassette Disposable Red felt-pen cartridge Green Blue Plotter pen Purple Mounting brackets Fuse (5V 5mA Timelag) Instruction Manual SPARES Z-fold chart 6 color ribbon cassette B9565AW B99AX Disposable felt-pen cartridge Plotter pen Mounting brackets Red Green Blue Purple B99AM B99AN B99AP B99AR B99BX Fuse (5V 8mA Timelag) Lubricating oil A5EF B99AZ (for dot printing model) OPTION CODES T6.EPS Order Name Parts No. Q ty Description (units) chart / unit piece / unit 3 pieces / unit 3 pieces / unit 3 pieces / unit 3 pieces / unit piece / unit 4 pieces / unit piece / unit T7.EPS Option Code / A / A / A3 / C3 / D / N / N3 / R Description Alarm output relay ( contacts) Alarm output relay (4 contacts) Alarm output relay (6 contacts) RS-4A Interface Temperature unit change Cu, Cu5, Pt5 RTD input PR-4, Platinel TC input Remote controls (5 plugs) T8.EPS All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
9 REAR TERMINAL ARRANGEMENTS Input Terminals Power supply terminal L N ALARM 3 4 5 NO C NC Option terminal 3 Pen Type CH CH 6 Dot Type CH CH CH3 6 CH3 CH4 REMOTE 3 CH5 Input terminal 4 5 C RS-4A CH6 SD A SD B SG G RD A RD B FG G /B +/A /b /b +/A /B (6 dot model) Note: The arrows show the direction in which the wires will be running when connected to the terminal. Option Terminals /A3/C3/R Combination 3 4 Alarm Output Relay (/A3) 5 6 3 4 5 C SD A RD A SD B SG RD B FG Remote Control (/R) Communication (RS-4A) (/C3) F.EPS All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
DIMENSION Bracket Unit: mm (approx. inch) Door to 6 (Panel thickness) 95 Display Door (Side-by-side mounting) 5.5 (5.96) 44 (5.67) 7.5 (.8) (8.66) 78 (7.) 44 (5.67) 5.5 (5.96) 36.5 (5.37) Note: If not specified, the tolerance is ±3%. However, in cases of less than mm, the tolerance is ±.3mm. F.EPS All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
PANEL CUTOUT & SPACING 5.5 (5.96) 44 (5.67) 7.5 (.8) (8.66) 78 (7.) Unit: mm (approx. inch) to 6 (panel thickness) 9.3 (.37) (min. space for mounting) Note: The SR should be mounted by only two brackets, either on the top & bottom of the recorder, or on the left & right side of the recorder. 7.5 (.3) (dimension after mounting) Single-Unit Mounting Side-by-Side Mounting (horizontally) Side-by-Side Mounting 37 (vertically max. 3 unit) (5.39) + 37 + (5.39) 37 (5.39) + L + 37 (5.39) + 75 MIN (6.89) 44 (5.67) 5.5 (5.96) 36.5 (5.37) L + Units 3 4 5 6 7 8 9 n L (mm) + 8 46 57 74 858 46 9 434 (44 n) 6 Weight: SR-A-: 3.kg SR-A-: 3.3kg SR3-A-: 3.5kg SR6-A-: 3.4kg 75 MIN (6.89) Note: If not specified, the tolerance is ±3%. However, in cases of less than mm, the tolerance is ±.3mm. F3.EPS All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997-
Relationship between Bezel Height of Peripheral Equipment and Space between Measurement Instruments (In case mounted at the left side of SR) H G Unit: mm PANEL Height of Bezel from Panel Less than H (mm) Space More than G (mm) Peripheral instruments 7.5 4 8 3 3 More than 36 unlimited 4 Note: For instruments which do not have taper and angle R. F4.EPS (In case mounted at the right side of SR) G H Unit: mm PANEL Height of Bezel from Panel; H (mm) Space; G (mm) less than 3.5 7.5 Peripheral instruments more than 3.5 more than 3 Note: For instruments which do not have taper and angle R. F5.EPS All Rights Reserved. Copyright 997, Yokogawa Electric Corporation LF 4D8B-4U st Edition Oct. 3,997- Printed in Japan, (YG)