User manual

ManualsBrandsAlarm & Starter ManualsBattery Charger2300 Series

Model: 2100 &2300 Series

2100UM22.DOC Rev: 2.2

- 4 -

1.0 INSTRUMENT OVERVIEW

1.1 FEATURES

 2 Point automatic calibration

 Galvanically isolated probe inputs

 2 Point automatic calibration

 RF Technology

 Arjay pulse card system for simple, safe, remote control, calibration and maintenance

 Up to 4 Differential Alarm relays (SPDT 10A contacts) field mappable to either probe

 Isolated mA output per probe Independently selectable as Direct / Inverse & 4-20 / 0-20mA

output with offset capability

 RS-485 Modbus protocol

 No moving parts

 For use with any Arjay Capacitance probe

1.2 DESCRIPTION

The unit senses level using a RF capacitance measurement technique for very high-resolution

measurements. A probe mounted in a vessel forms a capacitor with the vessel wall, or with a

concentric shield around the probe for non-metallic vessels (ground reference). The capacitance of

this arrangement is directly proportional to the level of material in the tank and may be measured to

provide signals and controls.

Probe inputs and mA outputs are all galvanically isolated to minimize electrical interference.

The Arjay Level-Ease 2000 Series system uses RF (radio Frequency) methodology to measure the

vessel capacitance. This technique minimizes the effects of other electrical properties of the probe,

vessel, and vessel contents and focuses only on the vessel capacitance. The controller may be

located up to one km away from an Arjay probe via inexpensive 2 wire shielded cable.

Model 2100 series controllers offer a 20 character by 4 line LCD and 16 key membrane keypad offer

detailed data displays plus ease of calibration and setup. Level is displayed in percentage fill and in

user selectable engineering units. In addition a bar graph gives a quick indication of level.

Model 2300 series controllers are “blind” and have no display or keypad.

Figure 1.0

BLOCK2k.DRW

Intrinsic Safety Barrier

(Optional)

2 Wire

(shielded)

CAPACITANCE

LEVEL PROBE

220/115VAC

24VDC

4 SPDT RELAY

CONTACTS

Isolated 4-20mA

RS-485 Network

(2 Wire)

Isolated input

Probes upto 1km away