GGD-330 GGD-336 GGD-337 Load cell controller

GGD-330 GGD-336 GGD-337 Load cell controller

Overview

GGD-330 GGD-336 GGD-337 Load cell controller is A set of weighing or force measurement display, four constant value control and analog transmission of multi-functional small control instruments. The circuit adopts single chip microcomputer and high-efficiency a/d converter. With a high degree of intelligence, all adjustments and settings are completed by the operation of the touch keyboard on the front panel. The results of adjustments and settings can be maintained for a long time without power, which is very convenient and reliable. It is suitable for weighing or force measurement display, constant value control, sensor signal transmission and other occasions.

Main technical indicators and characteristics of GGD-330 GGD-336 GGD-337 Load cell controller 

Sensor excitation power supply: dc10v, 150mA, up to four sensors with internal resistance of 350 ohms can be used in parallel.

Sensor input signal range: 0-30mv (0-3mv/v).

Zero adjustment range: 0-30mv.

The maximum number of divisions that can be displayed: 65000 words.

Maximum displayable sensitivity: 2000 words /mv.

Measurement nonlinearity: 0.01% FS.

Sampling speed: 75 times / second.

Analog transmission output signal: 4-20mA, the maximum external load is 500 ohms.

Accuracy of analog transmission output signal: 0.03%.

Output characteristics of constant value control switch: relay normally open switch output, ac125v, 0.5A.

Display: five digit LED digital display, five digit LED light-emitting tube status indication.

Keyboard: five composite touch keyboards.

Working environment temperature: 0~40 "C

Working power supply: AC220V, 50Hz, 5W

Function operation of GGD-330 GGD-336 GGD-337 Load cell controller 

Zero

In the running state (the running indicator light is on, the same below), press the [switch] and [zero] keys at the same time, and the instrument will immediately complete zero adjustment and display zero. Zero adjustment can be carried out arbitrarily within the weighing range as required, without limitation.

Constant value setting

When the constant value output is required, the four constant values of the instrument can be set through keyboard operation.

In the running state, press the [switch] and [constant value] keys at the same time, the [running] indicator light goes out, and the [constant value 1] indicator light is on. At this time, the value of constant value 1 can be set. The setting method is as follows:

Press the [>] key to move the display bit to be adjusted in the right direction and press the [\] key to increase the value of the flashing display bit.

Press the [\] key to increase the value of the flashing display bit. Press the [v] key to reduce the value of the flashing display bit.

When the display number on the panel is adjusted to the required fixed value, press the [Enter] key to confirm, and the setting of fixed value 1 is completed. [constant value 2] the indicator light is on, and the constant value 2 value is set in the same way as the constant value 1 value until all four constant values are set. When setting the constant value, the instrument is carried out in a circular way, that is, after setting the constant value 4, it will return to the setting operation of constant value 1. At this time, the user can continue to use the [Enter] key to check the set value of each constant value, of course, you can also modify the set value again, and at any time, press the [return] key, the [run] indicator light will be on, and the constant value setting will end.