2
1. INTRODUCTION
The CDTX-111 is a microprocessor controlled conductivity measurement
instrument. The unit utilizes a multifunction LED to display readings and
provide feedback to the user. The unit includes fully configurable control,
alarm and feedback with up to two relays and 4-20mA current output
sources.
2.
FEA TURES AND TECHNICAL SPECIFICATIONS
2.1 Features
(1) 3-1/2 LED digital with back-lit display
(2) Measured conductivity, resistivity, temperature
(3) 0 ~ 100°C automatic/manual temperature compensation
(4) Manual or Automatic buffer adjustment
(5) Restore factory setting function is available
(6) Galvanic separation between inputs and outputs and supply voltage
(7) Different input for excellent noise rejection
(8) High and low programmable alarm, 250V/10A relay output
2.2 Technical Specifications
(1) Ranges of measurement
：
0~ 18 M
Ω
Ω ·
cm or 0~19.99uS/cm,
0~199.9uS/cm, 0~1999uS/cm
(2) Accuracy
：
±0.5 % / ±0.2°C
(3) Linearity
：
±0.1% of range
(4) Repeatability
：
±0.1% of range
(5) Temperature compensation type
：
Auto / manual 0°C to 100°C
(6) Alarm Output
：
Two relays outputs (250V/10A)
，
full range with hysteresis
adjustable
(7) Current output
：
DC 4~20mA
，
Opto-isolated outputs
，
( 750
Ω
Max. load)
(8) Ambient Operating temperature
：
-10~+55°C
(9) Humidity
：
≤
95%
