TX84變送器 美國omega
4-20ma回路過程指示器，采用NEMA-4X型外殼，2線
TX83A and TX84
4-20ma回路過程指示器，采用NEMA-4X型外殼，2線
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
Options
1/2 EMT Conduit Fitting
1/2 NPT Pipe Fitting
Relay-Track Mounting Adapters
External Explosion-Proof Housing
Companion Current Transmitters
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.
注釋: Comes with complete operator's manual.
產(chǎn)品型號說明
(1) (2) (3)
選項描述
(1) Models
選擇
TX83A 代表 CMV - Meter to Case 代表 700 Vp
TX84-2 代表 EMT conduit mounting
TX84 代表 NPT pipe mounting
(2) Mounting Options
選擇
Nothing(leave field blank) 代表 Standard Unit
-MAT1 代表 Adaptor plate for surface mount or 69.9 mm relay track-Available for TX83A only
-MDT1 代表 Rail clamp for DIN relay track-Available for TX83A only
(3) Calibration and Certification
選擇
Nothing(leave field blank) 代表 Standard Unit with mounting options
-FS 代表 Custom configuration and calibration
產(chǎn)品型號/產(chǎn)品描述
TX83A Flat surface or relay track mounting
TX84-2 EMT conduit mounting
TX84 NPT pipe mounting
Accessories
MXS1 Spring retainers for TX83A in explosion proof housing EPW3
MXS2 Spring retainers for TX83A in explosion proof housing EPW2
EPW3-ATEX NEMA 4 and NEMA 7 rated environmental enclosure with window, single height; includes MXS1 hardware (supplied with Demko/ATEX certificate)
EPW2-ATEX 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)
TX84變送器 美國omega
