Instruction Manual REG 21 Table of Contents Safety precautions ......................4 Appropriate use ....................... 4 Shipping, assembly, electrical connections and start-up ..........4 Troubleshooting, maintenance, repairs, disposal ............. 4 Symbols .......................... 5 Instrument description ..................... 6 Start-up ..........................6 Features .......................... 6 3.1.1 Inputs and outputs ......................
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Instruction Manual REG 21 Purpose of instruction manual This instruction manual describes the features of the REG 21 pressure regulator and provides guidelines for its use. Improper use of this instrument or failure to follow these instructions may cause injury or equipment damage.
Instruction Manual REG 21 Safety precautions 1.1 Appropriate use The REG 21 pressure regulator is designed for measuring, displaying, monitoring and regulating positive and negative overpressures and differential pressures of non- aggressive, gaseous media. Always observe the operating requirements—particularly the permissible supply voltage—indicated on the rating plate and in the “Technical data”...
Instruction Manual REG 21 The electronic components of the instrument contain environmentally hazardous materials and materials that can be reused. For this reason the instrument must be recycled in accordance with the environmental guidelines of the jurisdiction in question once it has been taken permanently out of service.
Instruction Manual REG 21 Instrument description The REG 21 pressure regulator measures differential pressures between its two pressure ports, which lead to two chambers of a pressure measurement capsule. Pressure is measured via a beryllium bronze membrane spring, which is displaced by the pressure difference between the two chambers.
Instruction Manual REG 21 Switching outputs 1 and 2: The instrument comes equipped with 2 relay outputs (2 transistor outputs are also an option). The type of switching output is indicated on the rating plate. Switching outputs are triggered when values exceed and/or fall below switch-on and switch-off values.
Instruction Manual REG 21 3.1.4 Menue tree Time constant (1,2,5 and 10 sec.; Default: 1) brightness Basic settings (1 to 15; Default: 5) zero adjustment (autom./manuell; Default: manuell) Switch-on value (0 to 100%; Default: 35%) Change the switch-of value parameters of (0 to 100%;...
* hold for <2 s: depress the key(s) until the decimal points on the measured value display begin to move (see fig. 7 (2)) ** hold for > 2 s: depress the key(s) until the “PPP” release code appears (see fig. 7 (3)). Table 2 User functions for the REG 21 pressure regulator...
3.4 switching output 2 (analogous to switching output 1) switch-on value see above switch-off value see above switch direction see above Table 3 parameters for the REG 21 pressure regulator...
Instruction Manual REG 21 Switching behaviour The behaviour of the switching outputs is determined by the settings for the switch- on, switch-off and switch direction parameters. Both switching outputs can each be used individually as two-point controllers or in combination as three-point controllers. The following diagrams illustrate this feature and define the behaviour of the switching outputs.
Instruction Manual REG 21 Zero-point calibration The instrument’s zero point can be calibrated either automatically or manually; the type of calibration is determined by the “zero-point calibration” parameter setting (see section 6.1) If this parameter is set to “automatic zero-point calibration,” the zero point will be calibrated automatically as soon as the instrument is switched on and then again 15 minutes later.
Instruction Manual REG 21 Identification Included in shipment The instrument model ordered This instruction manual Product labelling The rating plate provides the following information: measurement range type of analogue output precision class supply voltage ...
Connect tubing ( 6,5 mm) for reference pressure at the (-) port. Connect tubing ( 6,5 mm) for measured pressure at the (+) port. pressure ports terminal strip Fig. 5 rear view of the REG 21 pressure regulator...
Instruction Manual REG 21 5.2.2 Electrical connections WARNING! The instrument is available in a number of different models. The model is identifiable by the features described in section 4.2 and indicated on the rating plate and on the second housing label. The model must be identified before making any electrical connections.
Instruction Manual REG 21 Start-up Switch on unit by connecting the power supply. The instrument will automatically execute the following sequence of steps: The unit will run a check, causing all display segments to light up for 2 seconds.
Instruction Manual REG 21 Setting parameters If parameter mode is not released within 30 s of calling up a parameter setting function, the instrument returns to monitoring and display mode. Press either of the set keys ( ) to exit parameter mode while setting parameters (prior to concluding the session by depressing the enter ...
Instruction Manual REG 21 25 % switch-off entire measurement range value 0, 1 switch direction switching output 2: hold for >2 s** 50 % switch-on entire measurement range value 10 % switch-off entire measurement range value 0, 1 switch direction * hold for <2 s: depress the key(s) until the decimal points on the...
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Instruction Manual REG 21 The display shows the value currently set for the parameter (2). Press (multiple times) to select the desired value (3). Press the enter key to confirm the selected value (4). Press one of the set keys ( ) to save the value (5).
Instruction Manual REG 21 6.2.1 Notes on setting switching value parameters. Switching values can be entered as decimal figures; each place must be set individually, proceeding as follows and beginning with the “function and parameter code” (see fig. 9): Press the enter key to open the parameter settings dialog (1).
Instruction Manual REG 21 Troubleshooting The instrument recognizes the following problems and responds by returning an error message: Error Problem Cause Corrective Action message E003 overloaded pressure too high send the instrument to the pressure manufacturer for repair measurement capsule...
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