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深圳市扎克貿(mào)易有限公司
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深圳市扎克貿(mào)易有限公司
主營產(chǎn)品： VIBCO,DALEX,Leuze,KENDRION,CROUZET,Weldsaver |
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RTM 70/71
RTM 82/83
RTM 90-P/R
RTM 80/81
RTM 100-P/R
ISOR 70/71
ISOR 90-P/R
ISOR 80/81
ISOR 100-P/R
SIGR 10/11
V 14-32V/ ±15V fixed Voltage output
SIGR 32/33 0/4-20mA 2-D, 14-32V fixed Current output
SIGR 15-P/R V, 0/4-20mA 16-32V progr. Programmable via DIL switches
SIGR 30/31
4-20mA 2-D, 9-32V fixed 4-20 mA 2-wire connection
SIGR 35-P/R
4-20mA 2-D, 10-32V progr. Programmable via DIL switches Dimensions:
ISOR 10/11
V/Iso. 14-32V/ ±15V fixed Voltage output 55x32x15mm
ISOR 30/31
4-20mA/ Iso. 2-D, 10-32V fixed 4-20 mA 2-wire connection
RTM 10/11
V 14-30V/±15V fixed Voltage output
RTM 30/31
4-20mA 2-D, 12-30V fixed 4-20 mA 2-wire connection
RTM 32/33
0/4-20mA 14-30V fixed Current output Dimensions: 30x30x15mm or 30x20x15mm
RTM 60
V ±15V fixed Very accurate, true diff. amplifier
Connecting a potentiometer to a module The diagram opposite shows how to connect a potentiometer to an RTM DIN rail module. When using a potentiometer as a voltage divider we recommend using an RTM module. As is the case for any normal resistor, the current sources (So+, So-) should be connected to both ends of the potentiometer. The "+" input is connected to the tap. The advantage of a current source over a voltage source is that any voltage drops in the wires, plugs, etc., have no effect. For a printed circuit board module, the following applies: So+: 9, "+"- input: 8, "-"-input: 10, So-: 5. Connection of Power Supply and Output of a 4-20 mA module DIN-rail module RTM 80,100, ISOR80, 100. Exchange 1 and 2 with printed circuit modules (SIGR30, ISOR30) Connection 3,4: leave open Terminal 1: Pos. power supply Terminal 2: Neg. power supply, 4-20 mA output The resistor RL converts the current (4-20 mA) to a voltage signal, U. Where HF interference cannot be excluded, it is recommended that a filter (CF and RF) be installed in front of the shunt resistor (RL). RF is typically approx. 100 Ohm and CF 100 nF up to several mF. Such a filter is generally required (usually together with an overvoltage arrester, e.g., a ZNR) in order to fulfil EC-EMC standards. Exchange terminals 1 and 2 with printed circuit modules Adjustment of Measurement Range and Zero Point The modules with a fixed measurement range are precisely calibrated at the factory (error usually less than 0.05%), further calibration is generally unnecessary. If the output values are not correct, first of all check the connections, the power supply (is the supply voltage correct ?), the experimental arrangement and all instruments in use. We recommend that when working with programmable or configurable modules, the calibration should be checked after each new adjustment. Adjustment is performed using a calibrator or a calibrated sensing device. The zero point (offset) is adjusted via the "Offs" potentiometer and the full scale value is adjusted via the "gain" potentiometer. The zero point is adjusted first and then the full scale. Where large adjustments are necessary, the procedure should be carried out several times. For additional reliability, the output value should be measured at half the measurement range (linearity test). The output voltage of modules with a unipolar supply voltage can’t reach exactly 0 mV. In such cases, zero point adjustment must be performed with an input value which produces a non-zero output value.
