Omega Products TX91-E3 User Manual
N-13
To Order
(Specify Model Number)
Model No. Price Description
TX91-(*) $188 Thermocouple transmitter (J, K, T or E)
TX92-(*) 188 RTD transmitter (100 Ω, Pt 0.00385)
NB1TX-(*) 237 NB1 thermocouple probe, 12" L,
1
⁄4" OD, ungrounded junction, 304 SS
sheath, with TX91 transmitter
PRTX-(*) 278 PR-12 RTD probe, 12" L, 1⁄4"OD,
304 SS sheath, with TX92 transmitter
TX92-6 transmitter, $188,
shown with optional RT
mounting track, $30, and
optional TX90-BR
mounting bracket, $18.
Shown actual size.
*
Insert range code from chart below. Comes complete with
operator’s manual.
Ordering Example: NB1TX-K6, TX91 transmitter for Type K
thermocouple, 0 to 1000°F output range. Transmitter housed in
NB1-CASS-14U-12 Type K probe, $237.
For complete information on NB1 thermocouple probes and PR-12
RTD probes, see Sections A and C.
Miniature Temperature
Transmitters
Thermocouple or RTD Input
TX90 Series
Starts at
$
188
⻬ Metal Case, RFI Shield
⻬ 2-Wire Transmitter
⻬ 4 to 20 mA Output
⻬ ±0.1% FS Accuracy
⻬ Upscale Break Protection
⻬ Non-Isolated
⻬ Mounts in Protection Head
The economical OMEGA®TX91 and TX92 2-wire
transmitters provide an output current of 4 to 20 mA,
and are proportional to the mV signal of a
thermocouple or to a 2- or 3-wire RTD sensor input.
The TX91 or TX92 are 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 193°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)
Accessories
Model No. Price Description
PSR-24S $60.00 Regulated power supply, US plug,
90 to 264 Vac input, 24 Vdc output,
400 mA, screw terminals, UL
PSR-24L 60.00 Regulated power supply, US plug,
90 to 264 Vac input, 24 Vdc output,
400 mA, stripped leads, UL
PSR-24L-230 60.00 Regulated power supply, European
plug, 230 Vac input, 24 Vdc output,
400 mA, stripped leads, CE
PSU-93 40.00 Unregulated power supply, 16 to
23 Vdc, 300 mA max, screw terminal
TX82B 150.00 Process loop-powered indicator (see
TX82B)
RT 30.00 1.2 m (48") mounting track
TX90-BR 18.00
Mounting bracket for RT mounting track
TX90-DIN 27.50 DIN rail mounting adaptor
RAIL-35-2 15.00 2 m (6.5') section 35 mm DIN rail
IS/I/1/ABCD
NI/I/2/ABCD
TX91 & TX92
Entity Parameters
Vmax. = 30 V
Imax = 150 mA
Ci = Oµf
Li = OmH
Notes: (1) Thermocouple models’ output proportional to mV output of
T/C. Not linearized to temperature. (2) Non-Isolated unit for use with
ungrounded probes.
Model Number
TX91 TX92
J K T E RTD Range °C (°F)
–––– 1 -40 to 49 (-40 to 120)
J2 K2 T2 E2 2 -18 to 93 (0 to 200)
J3 K3 T3 E3 3 -18 to 149 (0 to 300)
J4 K4 T4 E4 4 -18 to 260 (0 to 500)
J5 K5 – E5 5 -18 to 399 (0 to 750)
J6 K6 – E6 6 -18 to 538 (0 to 1000)
NB1TX shown
with optional
thermowell, $237.
FM
APPROVED
POPULAR RANGE CODES HIGHLIGHTED!
AVAILABLE FOR FAST DELIVERY!
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