Universal process transmitter with control unit
RMA42
Info-Hotline
+40 21 315 90 69
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1 or 2 universal inputs, optional intrinsically safe
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Backlit 5-digit LCD
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2 limit value relays with additional status output
Specs at a glance
Inputs 1/2 universal inputs measuring current, voltage, resistance, temperature, optional intrinsically safe Functionalities Linearization, mathematical calculations, differential pressure package Outputs 2 relays, 1/2 analog outputs Dimensions 45 × 115 × 118 mm (1.77" × 4.53" × 4.66") Display LCD - 2 lines;
black/white/yellow;
toggle function between channels
Product / Version Price / pcs. in EUR Order code Approval Input; Output 1 to 3 4 to 10 11+ Non-hazardous area 1x universal; 1x analog 245,- 220,- 201,- RMA42-AAA 2x universal; 2x analog 333,- 299,- 273,- RMA42-AAB 1x universal; 1x analog + 2 relay 297,- 267,- 244,- RMA42-AAC 2x universal; 2x analog + 2 relay 384,- 346,- 315,- RMA42-AAD ATEX II(1)GD [Ex ia] IIC 1x universal; 1x analog 289,- 260,- 237,- RMA42-BHA 2x universal; 2x analog 377,- 339,- 309,- RMA42-BHB 1x universal; 1x analog + 2 relay 341,- 307,- 280,- RMA42-BHC 2x universal; 2x analog + 2 relay 428,- 386,- 351,- RMA42-BHD Accessories
Product / Version Price / pcs. in EUR Order code Configuration kit TXU10- for PC-programmable devices. set-up programme+interface cable for PC with USB-Port. 4 pin plug 99,23 TXU10-AC Housing Field, R4 182x180x165, 5xM20, PC Protection housing Minitec. Synthetic housing with transparent cover. Protection IP66. 4x22.5mm / 2x45mm. Usage: FTL825. 72,85 52010132 Prices valid until 31.03.2019 in EUR per unit (not including shipping and applicable sales tax). See
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Application
Due to its universal design the RMA42 process transmitter is suitable for many industries such as chemical, water and waste water and food and beverages. Typical applications include monitoring of signals for any violation of preset limit values (also to WHG) as well as transmission of signals from hazardous areas, differential pressure applications and signal multiplying. RMA42 can be installed in a switch cabinet or used in a field housing.
Function
The RMA42 process transmitter powers the transmitter or sensor and processes the analog signals from those. These signals are monitored, evaluated, calculated, saved, separated, linked, converted and displayed. The signals, intermediate values and the results of calculations and analysis are transmitted by digital or analog means. With the two relays the process can be controlled.
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Technical data
Input parametersInput 1/2 × universal input 0 to 20 mA, 4 to 20 mA;
Over range: up to 22 mA, 0 to 10 V, 2 to 10 V, 0 to 5 V, 1 to 5 V, ±1 V, ±10 V, ±30 V, ±100 mV, 30 to 3000 Ω;
Pt 100 according to IEC60751, GOST, JIS1604, Pt 500 and Pt 1000 according to IEC60751;
Cu 100, Cu 50, Pt 50, Pt 46, Cu 53 according to GOST;
Ni 100, Ni 1000 according to DIN43760;
Type J, K, T, N, B, S, R according to IEC60584;
Type U according to DIN43710;
Type L according to DIN43710, GOST;
Type C, D according to ASTM E998
Linearization 2 Linearization tables of input values (up to 32 linearization points supported) Output parametersAnalog output 1/2 x analog output, 0 to 20 mA, 4 to 20 mA; 0 to 10 V, 2 to 10 V, 0 to 5 V;
short-circuit proof, Imax < 25 mA
Loop power supply 24 V DC (+15 % / –5 %), max. 30 mA; short-circuit proof and overload proof; galvanically isolated from system and outputs Status Output Open Collector to monitor device status as well as cable open circuit Relay 2 changers with function modes: min, max, gradient, alarm, out-band, in-band Limit function Max. contact burden DC 30 V / 3 A
(permanent state, without destruction of the input)Max. contact burden AC 250 V / 3 A
(permanent state, without destruction of the input)Min. contact load 500 mW (12 V/10 mA) Operating conditionsProtection Class DIN rail housing IP20 Ambient temperature –20 to +50 °C (–4 to 122 °F) Storage temperature –40 to +85 °C (–40 to 185 °F) Power supplyWide range power supply 24 V to 230 V AC/DC (–20 % / +10 %) 50/60 Hz Structural designHousing (W × H × D) 45 × 115 × 118 mm (1.77" × 4.53" × 4.66") Electrical Connection Pluggable screw clamps, 2,5 mm² Display and user interfaceDisplay LCD 2-lines;
black/white/yellow;
toggle function;
1st line: 7 segment, 5-digit;
2nd line: Dot-Matrix free programmable for Bargraph, TAG, unit
LED 2 × Device status;
2 × Relay status
Operation using three buttons and/or via configuration software FieldCare Device Setup ApprovalsEx-Approvals ATEX II(1)GD [Ex ia] IIC Others SIL2, UL, GL, CSA GP Software functionalitiesMin/Max log function / memory, alarm logging, differential pressure application package, 2 calculation channels: sum, difference, average, linearization AccessoriesConfiguration software FieldCare Device Setup Commubox TXU10 (including FieldCare Device Setup) Dimensions (in mm)
Installation according to instruction manual
Electrical connection
a) Input
b) Output
c) Analog Out
d) OC
e) Relay
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More documents for RMA42
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Application Example: Differential pressure measurement
Differential pressure measurements are no more complicated or expensive than an RMA42 process transmitter coupled with a pair of Cerabar pressure sensors. The signals from the pressure sensors are transmitted to the RMA42.
Inside the RMA42, the set analog input parameters are used to automatically calculate the difference between both pressures, hence the filling level value. The linearization of the level value then in turn allows calculating the volume. As a result, the level and the volume can be shown on the display and the values can be transmitted to other systems using the analog outputs of the device.
In addition, the RMA42 process transmitter possesses an integrated loop power supply and manages the sensors' power supply.
The same instruments combination is perfectly fit either to control the condition of a filter and to monitor a pump.Note that the RIA45 display for panel mounting and the the RIA46 display in field housing can be used like the RMA42.
a) Level
b) Head pressure
