Elektronische Digital-Anzeigeeinheit »EDU 32 FP« · Data Sheet

Table of Contents

Application

The EDU 32 FP accessory is a microcomputer-controlled counter and display apparatus. It is designed to be used in conjunction with RITTER Gas Meters, to count and display the absolute volume and flow-rate of gases flowing through the Meter. It consists of a unit in a separate (desktop) casing with a two-line Plain-Text-LCD-Display, and can be used with all RITTER Drum-type Gas Meters and RITTER Bellows-type Gas Meters. The following individual alterations and functions can be programmed via the Control Buttons:

Gas Meter type being used
Individual measurement range (min./max. flow rates) for custom-built Gas Meters
Upper and lower limiting values for Flow Rate
Pulse Generator in use:
- Standard (200 Pulses per revolution of the measurement drum)
- Ex-Proof (50 Pulses/Revolution)
- 2 x 200 Pulses (forward/backward)
- 500 Pulses per revolution of the measuring drum
- Custom-built Models (customer-preferred number of pulses under 200 or 50 respectively)
Language German/English in the Display
Analog-Output: Current Output or Voltage Output
Contrast adjustment of the Display

Technical Data

Power supply

either 110 V / 60 Hz or 230 V / 50 Hz (must be specified with order)
Over-/undervoltage:
- +15%
- -5% (with Current Output »On«)
- -20% (with Current Output »Off«)
6 Volt Accumulator for battery operation
Standart power socket, power cord

Display

large 2-line LCD Display, 16 characters per line
Display language programmable: English / German
Display contrast adjustable (via the Menu)
Display of:
- measured Gas Volume in (Liters)
- actual Flow Rate in (Liters per hour)
- programmed Gas Meter type/model
- power status (Mains / Battery / Low Batt)

Output

Interface RS 232 (Standard Sub-D-9-pin-socket):
- Signal: +/- 15 Volts
- Transmission rate: 9,600 Baud
- Data = 8 Bit, Parity = N, Stopbit = 1
Analog Output, programmable, round 5-pin-socket:
- Current Output: 4 – 20 mA or 0 – 20 mA
- Voltage Output : 0 – 1 Volt

Input

Pulses from Pulse Generator built into Gas Meter, round 5-pin-socket suitable for all RITTER Drum-type Gas Meters and Bellows-type Gas Meters (Type and Model programmable via the control buttons).

Further Functions

Data transmission via RS 232 to a PC
Configuration of the EDU 32 FP from the PC
Pre-selection of a minimal or maximal Flow Rate
Acoustic Signalling (Beep) when the Flow Rate values exceed the pre-selected min./max. range
Power supply for the power interface can be turned off (to in-crease the running time during battery operation)

Control Codes

(for data transmission from Interface RS 232 to Computer)

Ctrl-V (Hex 16) provides: VOL 00000,00 LTR
Ctrl-F (Hex 06) provides: FLOW 000,00 L/H
Ctrl-C (Hex 03) causes: RESET
Ctrl-T (Hex 14) provides: Type + Power Status

Control elements

Push-buttons, waterproof

Button	Function
ON/OFF	On/Off
RESET	(in measurement mode): Resetting the Display to zero
ENTER	(in set-up mode): For scrolling through provided Menu Options and saving of selected option
MODE	(in measurement mode): Choice of Display »Volume« and/or »Flow Rate«
SELECT	(in set-up mode): For selection of required Menu Option

General

Dimensions (W x D x H): 155 x 200 x 120 mm
Weight: 1.4 kg
Temperature Range: 0 °C to + 50 °C

Fuse

0.1 Ampere – located at the rear wall in a fuse drawer below the power socket. The fuse drawer contains a spare fuse as well.

Scope of supply

Power cord (with delivery into countries with German Standard for socket / plug only)
Connection cord to Pulse Generator

V 5.2 / Rev. 2023-03-15 / Subject to alterations.

Download this data-sheet as PDF file

The most recent version of this data-sheet can be found at …
https://dlr.ritter.de/elektronische-digital-anzeigeeinheit-edu-32/

Dr.-Ing. RITTER Apparatebau GmbH & Co. KG · Coloniastrasse 19-23 · D-44892 Bochum · Germany
For questions please contact mailbox@ritter.de or your local distribution partner (on our overview page)