Accessories
Electronic Display Unit
Battery Operation
General
The built-in Battery is a rechargeable, maintenance-free and fully-sealed Lead-Gel Accumulator. It can be recharged simply by connecting the Display Unit to a Mains Supply. Overloading of the Accumulator is not possible, no matter how long the Display Unit remains connected to the Electricity Supply.
When the Display Unit is battery operated, the displayed power status will be "Battery".
Technical Data
Voltage (internal): 6.8 Volts
Battery Service Life:
- 4 hours with Pulse Generator connected and 4-20 mA Output Current turned on and maximum current of 20 mA
- 18 hours with Pulse Generator connected and 4-20 mA Output Current turned off
Display "Low Batt": indicates that the Battery charge is down to about 10% capacity, with a remaining operational duration of about 0.5 / 1.5 hours with Output Current turned on / off.
Recharging time: about 12 hours (Overloading not possible)
Life span: 4 years or 200 recharge/discharge cycles
Care when not in regular use
The Display Unit must never be stored with an empty Accumulator, otherwise damage to the Accumulator is likely to occur after about 24 hours (as a consequence of sulphation of the lead plates). The Accumulator should be recharged by connecting the EDU to the mains supply for about 2 - 3 hours no later than every three months. It is not necessary to switch on the EDU while recharging.
Accumulator Change
- Pull power cord out of the socket!
- A screw is located in each of the four feet of the Accumulator - that is, on the bottom of the casing , in each of the four corners. These screws are accessed by pushing the covers over the Accumulator feet sideways and outwards.
- After undoing the screws, lift the upper part of the housing from the lower part. These two parts are internally connected by a wide band cable, which leads from the main board to the Display. The upper part of the housing should therefore be very carefully removed and placed on its head in front of the lower part.
- The Accumulator is secured to the base plate of the Accumulator Support with two holding clamps. It can be removed by undoing the nut on each holding clamp, and by detaching the connecting cable from the Accumulator Poles.
- After inserting a new Accumulator, the reassembly of the casing follows the same directions, but in reverse order.
Subject to alterations