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Your Source for Process Measurement & Control

4-20ma Loop Process Indicator in NEMA-4X Housing, 2 Wire

TX83A and TX84

Current Loop Indicator | TX83A and TX84

Current Loop Indicator

See All Models Below

1 year warranty
  • FM Intrinsic Safety Certification
  • Powered by 1 to 5, 4 to 20 or 10 to 50 mA Signal
  • 2.5 V Max Voltage Drop
  • 0.35 in (8.9 mm) LCD
  • 2,000-Count Zero Suppression or Elevation
  • 100 to 2,000 Count Span Adjust
  • Selectable Dummy Right-Hand Zero
  • -40 to 85°C Operation
  • Compact, 2.9" Diameter Die-Cast Housing
  • Waterproof to 35 kPa (5 psi)
  • Shock Resistant to 55 g

  • 1/2 EMT Conduit Fitting
  • 1/2 NPT Pipe Fitting
  • Relay-Track Mounting Adapters
  • External Explosion-Proof Housing
  • Companion Current Transmitters
Temperature Transmitters - View related products


Model TX83A is a two-wire current-loop indicator that is powered directly by a 1-5 mA, 4-20 mA or 10-50 mA process loop signal, with a maximum voltage drop of 2.5 V. No separate power supply connections are required. This reduces overall hardware and field wiring costs and provides immunity from most electrical noise encountered in process control environments. The electronics are isolated from the case.

Readout of Process Variables
The TX83A provides extensive zero and span adjustment capability, so that it can read out directly in percent or in engineering units for process variables such as pressure, flow, temperature, or level. Its liquid crystal display provides 3 1/2 active digits, a selectable dummy right-hand zero, and four programmable decimal points. By changing two internal jumpers, the normal positive slope response of the TX83A can be reversed, so that increasing the input decreases the reading.

Easy to Configure and Calibrate
Both span and zero are fine-tuned with precision multi-turn potentiometers. These are accessible through holes in the die-cast cover, which are normally sealed with fluorosilicone plugs. Coarse zero and span steps are selected by removing the cover with attached electronics and changing plug-in jumpers.

Designed for Harsh Environments
All versions of the TX83A are rated for operation from -40 to 85°C (-40 to 185°F) with specified accuracy. The case is made of die-cast metal and is waterproof to 35 kPa (5 psi). The electronics are firmly connected to the case top, so that the meter can withstand high vibration and shock. Mounting options include a male 1/2 EMT conduit fitting and a male 1/2 NPT pipe fitting in lieu of the normal rail or surface mount. These fittings eliminate the external screw terminals and provide a NEMA-4X rating.

Intrinsic Safety Certification
FM intrinsic safety certification is standard. Intrinsic safety certification allows the unit to be used in worst-case hazardous environments with no need for explosion-proof housing, provided that an intrinsic safety barrier is used to limit the voltage and current that may be introduced in the hazardous environment. FM certification (USA) is for Class I, II, III, Division 1, Groups A,B,C,D,E,F,G. The FM certification number is 2P1A7.AX (3610:2010).

Explosion-proof Housing Options
Two external NEMA-7 explosion-proof and NEMA-4 waterproof, sand-cast, copper-free aluminum enclosures with corrosion resistance "safety-blue" polyester powder-coating for use in hazardous locations. FM, UL, cUL Certification: Class I, Groups B, C, D; Class II, Groups E, F, G; and Class III, Type 4X. Demko/ATEX Certification: Ex II 2 G D EEx d IIC

Option EPW3 is a single-height enclosure for one TX83A loop-powered indicator. Option EPW2 is a double-height enclosure for a TX83A loop-powered indicator on top and a TX1500 Series isolated two-wire 4-20 mA transmitter on the bottom for indicating transmitter applications. Available with two female 1/2 NPT pipe fittings, all required internal mounting hardware, and mounting flanges for a wall or bulkhead.
Place Order(Specify Model Number)
Part Number/ Desc.
TX83A Star
Availability: 1 week
Flat surface or relay track mounting
TX84-2 Star
Availability: In Stock
EMT conduit mounting
TX84 Star
Availability: In Stock
NPT pipe mounting
MXS1 Star
Availability: In Stock
Spring retainers for TX83A in explosion proof housing EPW3
MXS2 Star
Availability: In Stock
Spring retainers for TX83A in explosion proof housing EPW2
Availability: 1 week
NEMA 4 and NEMA 7 rated environmental enclosure with window, single height; includes MXS1 hardware (supplied with Demko/ATEX certificate)
Availability: 1 week
NEMA 4 and NEMA 7 rated environmental enclosure with window, double height for TX83A and TX1500 series transmitter; includes MXS1 and MXS2 hardware (supplied with Demko/ATEX certificate)
All dollar amounts on this site are shown in Canadian currency. Note: Comes with complete operator's manual.
Ordering Example: (1) TX83A Current loop indicator with flat surface or relay track mounting, CAD470.00

Part Number Builder

Build Your Part Number Below
Option Descriptions:

(1) Models select from:
TX83A for CMV - Meter to Case for 700 Vp
TX84-2 for EMT conduit mounting
TX84 for NPT pipe mounting

(2) Mounting Options select from:
Nothing(leave field blank) for Standard Unit
-MAT1 for Adaptor plate for surface mount or 69.9 mm relay track-Available for TX83A only
-MDT1 for Rail clamp for DIN relay track-Available for TX83A only

(3) Calibration and Certification select from:
Nothing(leave field blank) for Standard Unit with mounting options
-FS for Custom configuration and calibration
Note: All combinations may not be valid, check spec sheet for valid part numbers.