- Industrial & lab equipment
- Measuring, testing & control
- Minco
- Temptran TT859
- Installation and operating instructions
- 8 Pages
Minco Temptran TT859 Temperature Transmitter Installation and Operating Instructions
Below you will find brief information for Temperature Transmitter Temptran TT859. This 2-wire temperature transmitter for RTD (Resistance Temperature Detector) thermometers converts the RTD's signal into a 4 to 20 mA DC current, which changes according to the range in which the transmitter is calibrated: 4 mA at the lowest temperature of the range, rising to 20 mA at the top of the range. The TT859 is FIELD RANGEABLE; the Zero and Span are adjustable over -10 to 60°F and 35 to 150°F respectively allowing for re-ranging by means of a simple calibration process.
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TT859 TemptranTM 2-wire Temperature Transmitter for RTD Thermometers Installation and Operating Instructions Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com Description Model TT859 is a 2-wire temperature transmitter for RTD (Resistance Temperature Detector) thermometers. The TemptranTM converts the RTD's signal into a 4 to 20 mA DC current. The current changes according to the range in which the Temptran is calibrated: 4 mA at the lowest temperature of the range, rising to 20 mA at the top of the range. The leads that supply power also carry the current signal. The TT859 is FIELD RANGEABLE; the Zero and Span are adjustable over -10 to 60°F and 35 to 150°F respectively allowing for re-ranging by means of a simple calibration process. Specifications Sensing Element: Output: System Accuracy: Transmitter Linearity: Rangeability: Housing: Operating Environment: Storage Environment: Ambient Temperature Effects: Warm-up Drift: Supply Voltage: Input Voltage Effect: Maximum Load Resistance: System Integration: Zero and Span Adjustment: Maximum Output Current: Power Connections: Sensor Connections: Weight: Minco 1000 ohm @ 0°C platinum RTD, 0.00375 ohm/ohm/°C TCR or 0.00385 ohm/ohm/°C TCR. 4 to 20 mA DC over specified range. ± 0.5°F (± 0.3°C) @ room temp or ± 0.8% of span operating @ 24 VDC. ± 0.1% of span. Zero: -10° to 60°F (-23° to 15°C). Span: 35° to 150°F (19° to 83°C). 2.75” W x 4.50” H x 1.56” D. Bone white plastic cover and baseplate with anodized aluminum endplates. Suitable for indoor use only. -40° to 185°F (-40° to 85°C), non-condensing. 67° to 212°F (-55° to 100°C), non-condensing. ± 0.01% Span/°F (± 0.018% Span/°C). ± 0.1% of span max., assuming Vsupply = 24 VDC and Rloop = 250 ohms. Stable within 15 minutes. 9.4 to 35 volts DC, non-polarized. ± 0.001% of span per volt from 9.4 to 35 VDC. The maximum allowable resistance of the signal-carrying loop, including extension wires and load resistance, is given by this formula: Rloop max = (Vsupply-9.4)/.02 amps. For example, if the supply voltage is 24 VDC, the loop resistance must be less than 730 Ω. Output “High” (22-25mA) with sensor open. Output “Low” (3.3-3.7mA) with sensor shorted. Non-interacting. 28 mA. Screw terminals, non-polar (connect either way). Screw terminals, non-polar (connect either way). 3.0 oz. (84 grams) Transmitter and housing. Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 2 Installation Installation of the TT859 consists of mounting the transmitter to a wall and connecting it to power. The housing is mounted using two countersink screws to secure the base plate to a wall. Access the mounting holes by separating the plastic base plate from the cover. Then secure the base plate to the wall, long edge to the vertical (observing the directional arrow marked on the base plate). Power and RTD wires are connected to the transmitter by 4 screw terminals located near the edge of the circuit board (Figure 1). The transmitter’s power and RTD connections are designed for non-polar hook-up, so polarity is not important. If calibration is necessary, set dip-switches before assembling housing (See Transmitter Ranging section). Connect a DC source, not exceeding 35 VDC, to the “PWR” terminals as shown below (Figure 1). Wiring Diagram Figure 1 Power Supply DC power supply requirements are determined by the TT859’s minimum voltage requirement and voltage drop across the load resistor and installation lead wires. Example: The transmitter requires 9.4 Volts minimum. A typical 250 ohm load resistor drops 5.0 Volts @ 20 mA. Allowing a margin of 0.5 Volts for the supply permits 25 ohms of lead wire resistance for remote installation. Totaling these, we get a minimum power supply requirement of 14.9 VDC. Using a 24 VDC power supply will take care of nearly all installations, but the TT859 will operate at voltages up to 35 VDC. Minco Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 3 Calibration Procedure 1. Connect the equipment as shown below (Figure 2) substituting a resistance decade box, with resolution of at least 0.01 ohm, in place of the RTD. DECADE BOX 24 VDC POWER SUPPLY ZERO ADJ. SPAN ADJ. 4-20 mA LOOP mA INDICATOR Figure 2 2. 3. 4. 5. Determine sensor resistance corresponding to the lower and upper temperature range of the transmitter from Tables 3 and 4 (page 6). Using “RTD Calc” a more complete resistance vs. temperature chart can be printed; Download it from Minco’s web site, www.minco.com. Set the decade box to the resistance value corresponding to the lower temperature. Adjust the Zero pot until the milliammeter reads 4.0 mA +/- 0.016 mA. Set the decade box to the resistance value corresponding to the upper temperature. Adjust the Span pot until the milliammeter reads 20.0 mA +/- 0.016 mA. Set the decade box to the resistance value corresponding to the lower temperature and verify that the milliammeter still reads 4.0 mA +/- 0.016 mA. Correct if necessary, then repeat steps 4 and 5. Transmitter Ranging The transmitter is initially calibrated to a specific temperature range, as shown on the label attached to the housing. Unless a different range is desired, ranging is not necessary. If the temperature range is changed, recalibrate the transmitter as described in the section, Calibration Procedure. When a different temperature range is desired, Tables 1 and 2 (Page 5) provide range switch settings corresponding to the various temperature ranges. Switches 1 to 4 set the lower temperature limit (Zero) of the transmitter. Switches 5 to 8 set the upper minus lower temperature (Span) of the transmitter. For example, a temperature range of 30 to 90°F has a Zero of 30°F and a Span of 60°F (90-30). Table 1 shows the closest Zero range is 30°F with switches 1 through 4, respectively, in the OFF, ON, ON, and OFF positions. Likewise, Table 2 shows the closest Span range is 57°F with switches 5 through 8, respectively, in the ON, ON, OFF, and OFF positions. Once the switches are set, the Zero and Span trim pots should provide sufficient adjustments to calibrate the transmitter. In the event that the trim pots do not have sufficient adjustments, the switch settings should then be changed. In the above example, if the Zero trim pot cannot adjust the transmitter current down to 4mA with the 30°F Zero switch settings, then the Zero switch settings should then be changed to 37°F (OFF, ON, OFF and ON) which is the next higher range. Likewise if the Span trim pot does not have sufficient adjustment, then the Span switch settings should be changed. Minco Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 4 Zero Switch Settings 1 ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF ZERO Switch Settings 2 3 ON ON ON ON ON OFF ON OFF OFF ON OFF ON OFF OFF OFF OFF ON ON ON ON ON OFF ON OFF OFF ON OFF ON OFF OFF OFF OFF 4 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF Center Point °F °C -13 -25 -8 -22 -2 -19 3 -16 9 -13 12 -11 18 -8 25 -4 28 -2 34 1 39 4 45 7 50 10 55 13 61 16 66 19 Table 1 Span Switch Settings (Upper Minus Lower Temperature Limits) 5 ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF SPAN * Switch Settings 6 7 ON ON ON ON ON OFF ON OFF OFF ON OFF ON OFF OFF OFF OFF ON ON ON ON ON OFF ON OFF OFF ON OFF ON OFF OFF OFF OFF 8 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF Center Point °F °C 31 40 47 56 65 74 81 90 99 106 115 122 131 139 148 155 17 22 26 31 36 41 45 50 55 59 64 68 73 77 82 86 Table 2 * Span = Upper - Lower Temperature. Minco Zero ranges overlap next adjacent range. Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 5 Resistance vs. Temperature for 1000 Ohm Platinum Sensors PW = 0.00375 ohm/ohm/°C, PF = 0.00385 ohm/ohm/°C Temp. (°F) 0 Sensor PW PF 0 932.07 930.33 -5 921.42 919.41 -10 910.76 908.49 -15 900.09 897.55 -20 ----------- -25 ----------- -30 ----------- -35 ----------- -40 ----------- -45 ----------- Temp. (°F) 0 Sensor PW PF PW PF PW PF PW PF PW PF 0 932.07 930.33 1038.04 1039.03 1143.08 1146.82 1247.19 1253.73 1350.38 1359.74 5 942.71 941.24 1048.59 1049.85 1153.54 1157.55 1257.55 1264.37 1360.64 1370.30 10 953.34 952.14 1059.12 1060.66 1163.98 1168.28 1267.90 1275.00 1370.90 1380.84 15 963.96 963.04 1069.65 1071.46 1174.41 1178.99 1278.25 1285.63 ----------- 20 941.57 973.92 1080.17 1082.25 1184.84 1189.69 1288.58 1296.24 ----------- 25 985.17 984.79 1090.68 1093.04 1195.25 1200.39 1298.90 1306.85 ----------- 30 995.77 995.66 1101.18 1103.81 1205.66 1211.07 1309.21 1317.45 ----------- 35 1006.35 1006.51 1111.67 1114.58 1216.06 1221.75 1319.52 1328.03 ----------- 40 1016.92 1017.36 1122.15 1125.34 1226.45 1232.42 1329.81 1338.61 ----------- 45 1027.49 1028.20 1132.62 1136.08 1236.82 1243.08 1340.10 1349.18 ----------- 50 100 150 200 Table 3 Resistance vs. Temperature for 1000 Ohm Platinum Sensors PW = 0.00375 ohm/ohm/°C, PF = 0.00385 ohm/ohm/°C Temp. (°C) -20 0 Temp. (°C) 0 20 40 60 80 100 Sensor PW PF PW PF 0 923.55 921.60 1000.00 1000.00 -2 915.88 913.73 992.38 992.18 -4 908.20 905.86 984.75 984.36 -6 900.52 897.99 977.12 976.53 -8 ----------969.48 968.70 -10 ----------961.84 960.86 -12 ----------954.19 953.02 -14 ----------946.54 945.17 -16 ----------938.88 937.32 -18 ----------931.24 929.46 Sensor PW PF PW PF PW PF PW PF PW PF PW PF 0 1000.00 1000.00 1075.93 1077.94 1151.45 1155.41 1226.45 1232.42 1300.96 1308.97 1375.00 1385.06 2 1007.62 1007.81 1083.53 1085.70 1158.97 1163.13 1233.92 1240.10 1308.39 1316.60 ----------- 4 1015.23 1015.62 1091.10 1093.47 1166.48 1170.85 1241.39 1247.77 1315.81 1324.22 ----------- 6 1022.84 1023.43 1098.66 1101.23 1174.00 1178.56 1248.85 1255.43 1323.23 1331.84 ----------- 8 1030.44 1031.23 1106.21 1108.98 1181.50 1186.27 1256.31 1263.09 1330.64 1339.50 ----------- 10 1038.04 1039.03 1113.76 1116.73 1189.01 1193.97 1263.77 1270.75 1138.04 1347.07 ----------- 12 1045.64 1046.82 1121.31 1124.47 1196.50 1201.67 1271.21 1278.40 1345.44 1354.68 ----------- 14 1053.23 1054.60 1128.85 1132.22 1204.00 1209.36 1278.66 1286.05 1352.84 1362.28 ----------- 16 1060.81 1062.39 1136.39 1039.95 1211.48 1217.05 1286.10 1293.70 1360.23 1369.88 ----------- 18 1068.39 1070.16 1143.92 1147.68 1218.97 1224.74 1293.53 1301.33 1367.62 1377.47 ----------- Table 4 Minco Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 6 How to Order TT859 Model Number: TT859 PW Resistance thermometer type: RTD Temptran PF = 1000 Ω Platinum (.00385) PW = 1000 Ω Platinum (.00375) 1 4-20 mA DC Output S Temperature Range (4 mA Temp/20 mA Temp): EN =-20 to140°F (-29 to 60°C) S = 0 to100°F (-18 to 38°C) A = 20 to120°F ( -7 to 49°C) BI = 30 to130°F ( -1 to 54°C) N = 32 to122°F ( 0 to 50°C) H = 40 to 90°F ( 4 to 32°C) SX = Special range as defined on job order – must fall within adjustment limits of Transmitter. Consult factory for current list of available ranges. 1 Calibration: 1 = No calibration data, sensor or transmitter 2 = Sensor/Transmitter matched at 0°C with NIST cert 3 = Sensor/Transmitter matched at 0, 100, & 260°C with NIST cert TT859PW1S1 ← Sample part number Warranty Items returned within one year from the date of sale, transportation prepaid, which Minco Products, Inc. (the “seller”) reasonably determines to be faulty by reason of defective materials or faulty workmanship will be replaced or repaired at the seller’s discretion, free of charge. This remedy is to be the sole and exclusive remedy available to the buyer in the event of a breach by the seller. Items that show evidence of mishandling or misapplication may be returned by the seller at the customer’s expense. Furthermore, the seller is not to be held responsible for consequential damages caused by this product except as required under Minnesota Statutes, Section 336.1-719 (3). This warranty is in lieu of any other expressed warranty or implied warranty of merchantability or fitness for a particular purpose, and of any other obligations or liability of the seller or its employees or agent. Minco Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com 7 Dimensions Figure 3 Minco (Main Office) 7300 Commerce Lane Minneapolis, MN 55432 USA Tel: 1.763.571.3121 Fax: 1.763.571.0927 Customer Service/ Order Desk: Tel: 1.763.571.3123 Fax: 1.763.571.0942 [email protected] www.minco.com Minco S.A. Usine et Service Commercial, Z.I. 09310 Aston, France Tel: (33) 5 61 03 24 01 Fax: (33) 5 61 03 24 09 Minco EC Hirzenstrasse 2 CH-9244 Niederuzwil Switzerland Tel: (41) 71 952 79 89 Fax: (41) 71 952 79 90 ISO 9001:2000 F:\MOD\TT859\LIT\1016MN.DOC Stock # 360-00101(-) 040405 www.minco.com
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Key Features
- 2-wire temperature transmitter
- RTD (Resistance Temperature Detector) thermometers
- 4 to 20 mA DC current output
- FIELD RANGEABLE
- Zero and Span adjustable
- calibration process
- Output “High” (22-25mA) with sensor open
- Output “Low” (3.3-3.7mA) with sensor shorted