Ultra-Miniature Thermocouple or RTD Temperature Transmitters TX93A and TX94A -Discontinued-
±0.1% FS Accuracy
4 to 20 mA DC Output
Only 35.6 mm (1.4") Diameter
Upscale Break Protection
J, K, T, or E Thermocouple Input
100 Ω Platinum RTD Input
TX93A and TX94A Series are discontinued. As an upgrade substitute, please check out the new TXUN temperature transmitter for details.
NEWPORT® Ultra-Miniature temperature transmitters convert millivolt inputs from thermocouples or resistance from RTD’s into 4-20 mA outputs.
Transmitters are available in color-coded enclosures covering the four most popular thermocouple types (J, K, T and E) as well as three-wire 100 Ohm platinum RTD’s.
Featuring state-of-the-art integrated circuits and electronic design these ultra-compact transmitters have a diameter of only 35.6mm (1.40”) and are designed to fit
in many compact thermowell protection heads such as the Newport NB2.
Newport also provides complete thermocouple and RTD assemblies. Typical stock sensors and transmitters are shown in the ordering guide. Almost any custom assembly is available for fast delivery.
TX93A and TX94A transmitters can eliminate long runs of costly field wiring in a variety of applications. A stable 4 to 20 mA output signal is provided proportional to the transmitters
specific input type and calibrated temperature range. Adjustability of ±25% for zero and span is provided to facilitate some rangeability. The transmitted signal eliminates noise pickup,
voltage drops, multiple cold junction errors and requires only a twisted pair of copper wire for loop connections.
All models and ranges of these Newport ultra-miniature transmitters are available with fully epoxy-potted electronics
(specify -P option)
providing the ultimate protection in extreme environments.
Output Range: 4-20 mA dc
Zero and Span Adjustment Range: ±25%
Accuracy: ±0.1% of FS
(includes effects of linearity, hysteresis and repeatability)
Frequency Response: 3dB @ 3 Hz Operating Temperature Range: -25 to 85°C (-13 to 185°F)
Storage Temperature Range: -65 to 125°C (-85 to 257°F)
8-35 Vdc, 24V recommended
Vs – 8
Dimensions: 35.6 mm Dia. x 23.6 mm H (1.40" x 0.93")
height includes terminal strip
Weight: 15 g ( 0.53 oz.);
25 g (0.8 oz) if epoxy-potted.
Industrial Thermocouple Protection Head
Available from Newport
-40 to 49°C (-40 to 120°F)
-18 to 93°C (0 to 200°F)
-18 to 149°C (0 to 300°F)
-18 to 260°C (0 to 500°F)
-18 to 399°C (0 to 750°F)
-18 to 538°C (0 to 1000°F)
- Not an available range
† All dollar amounts on this site are shown in US currency.
Note: (1) Thermocouple models, output proportional to mV output of thermocouple. Not linearized to temperature. (2) Non-isolated unit for use with ungrounded probes. (3) Each unit supplied with complete operator’s manual.
Keywords: Xmitter, Transmitter, Thermocouple Loop Power, low-cost, Ultra Miniature, complete probe assembly, 4-20 mA transmitters, protection head assemblies, transmit thermocouple signals, RTD transmitter, thermocouple transmitter, 4-20 mA transmitter, TX93A, TX94A