The economical OMEGA® TX91 and TX92 two-wire transmitters provide an output current of 4-20 mA proportional to the mV signal of a thermocouple or to a two- or three-wire RTD sensor input.
The TX91 or TX92 is very compact and can mount directly within OMEGA’s NB1 cast iron protection head. By having the transmitter near the sensor, the effects of electrical noise can be minimized and long runs of thermocouple wire can be eliminated.
Specifications Output Range: 4 to 20 mA DC Zero and Span Adjustment Range: ±25% Accuracy: ±0.1% FS (includes effects of linearity, hysteresis and repeatability) referenced to the mV input Ambient Temperature Range: -32 to 85°C (-25 to 185°F) Storage Temperature Range: -65 to 90°C (-85 to 19°F) Supply Voltage: 11 to 44 Vdc; 24 Vdc recommended Max Loop Resistance: (Vs - 11 V)/0.020A Dimensions: 29 H x 45 mm D (1.125 x 1.75") (height includes terminal strip) Weight: 50 g (1.5 oz)
Examples of pricing for popular models is referenced in the "To Order" box. Use the "Part Number Builder" below to get pricing for all available models.
† All dollar amounts on this site are shown in US currency.
Note: Comes with complete operator’s manual. Ordering Example: (1) NB1TX-K6 TX91 transmitter for type K thermocouple, 0 to 1000°F output range. Transmitter housed in NB1-CASS-14U-12 type K probe, $252.00
Part Number Builder
Option Descriptions
(1)
Transmitter Type
Select TX91 for Thermocouple transmitter J K T or E TX92 for RTD transmitter (100 ohm Pt 0.00385) NB1TX for Thermocouple Transmitter mounted in a head and probe assembly 12in L 1/4in O.D. 304 SS sheath PRTX for RTD Transmitter mounted in a head and probe assembly 12in L 1/4in O.D. 304 SS sheath
(2)
Sensor Type and Temperature Range
Select J2 for J Thermocouple -18 to 93°C (0 to 200°F) K2 for K Thermocouple -18 to 93°C (0 to 200°F) T2 for T Thermocouple -18 to 93°C (0 to 200°F) E2 for E Thermocouple -18 to 93°C (0 to 200°F) J3 for J Thermocouple -18 to 149°C (0 to 300°F) K3 for K Thermocouple -18 to 149°C (0 to 300°F) T3 for T Thermocouple -18 to 149°C (0 to 300°F) E3 for E Thermocouple -18 to 149°C (0 to 300°F) J4 for J Thermocouple -18 to 260°C (0 to 500°F) K4 for K Thermocouple -18 to 260°C (0 to 500°F) T4 for T Thermocouple -18 to 260°C (0 to 500°F) E4 for E Thermocouple -18 to 260°C (0 to 500°F) J5 for J Thermocouple -18 to 399°C (0 to 750°F) K5 for K Thermocouple -18 to 399°C (0 to 750°F) E5 for E Thermocouple -18 to 399°C (0 to 750°F) J6 for J Thermocouple -18 to 538°C (0 to 1000°F) K6 for K Thermocouple -18 to 538°C (0 to 1000°F) E6 for E Thermocouple -18 to 538°C (0 to 1000°F) 1 for RTD -40 to 49°C (-40 to 120°F) 2 for RTD -18 to 93°C (0 to 200°F) 3 for RTD -18 to 149°C (0 to 300°F) 4 for RTD -18 to 260°C (0 to 500°F) 5 for RTD -18 to 399°C (0 to 750°F) 6 for RTD -18 to 538°C (0 to 1000°F)
NOTE: All combinations may not be valid, check spec sheet for valid part numbers.