Functional Description; Introduction; Transmitter Unit - Delta DE212 Installation And Operation Manual

3.2 Functional Description

3.2.1 Introduction

The wireless connection between the handheld deadman control, the Transmitter unit and the
control unit, the Receiver in the vehicle, gives the operator better working conditions, improved
efficiency and a significant higher level of safety.
The limiting factor of a wired deadman is obvious since the cable length is normally 14m long
and reduces the operators ability to freely check around the vehicle and the fuelling panel under
the Aircraft fuselage.
The safety level is increased significantly by 3 factors:
a) The handheld deadman control is Ex-approved for Zone 1 operation.
b) Failsafe design. Very low risk for causing unwanted accident.
c) With the STOP button on the handheld control, the operator can remotely and instantly
STOP the fuelling process in case of an emergency.

3.2.2 Transmitter unit

Handle
Spiral spring
operating the
Deadman button
Low Battery/LB LED
The transmitter is controlled by a small microprocessor. It is always turned on in a standby
mode, and will therefore discharge the battery after 3 to 5 months, depending on the state of
the battery, if it is not recharged during that period of time.
A fully charged battery has a capacity of at least 12 hours of continues operation. The long
operating time is made possible by the Delta timeshare transmission system, WTT. Using
transmitting power only in very short periods.
The battery is charged via the two stainless steel contacts at the back side of the transmitter.
The transmitter must be charged on the charge station on the receiver front panel, or on a
mains battery charger, CH300 delivered by Delta RC. The transmitter charging connections,
are protected against discharging of the built-in battery.
The battery lifetime is normally 2-4 years.
The Deadman push-button is activated by a stainless steel handle as long as it is pressed.
D RC AS
ELTA
STOP Button
ransmitting TX LED
T /
Extra function, Hose reel (or pump RPM) control
Deadman button
Battery module
Page 12 of 33
Document no: 03039