HORIBA HE-200H Field-installation type electric conductivity meter

Model

HE-200H

Sensors in combination

4-electrode method conductivity sensor (FES Series) of cell constant 0.1/cm, or 1.0/cm

Measuring
range

Measurement
type

Unit

Cell constant
(/cm)

0.1
(FES-2XX, 310 series)

1.0
(FES-125, 126)

Conductivity

mS/cm

0.000 to 2.000

○

○

0.00 to 20.00

○

○

0.0 to 200.0

○

○

0 to 2000

△(*Note2)

△(*Note2)

Auto (*Note1)

○

○

Practical region
(*Note2)

0 to 500

0 to 1000

Display range

0 to 2200

S/m

0.000 to 0.2000

○

○

0.00 to 2.000

○

○

0.00 to 20.00

○

○

0.0 to 200.0

△(*Note2)

△(*Note2)

Auto (*Note1)

○

○

Practical region
(*Note2)

0.0 to 50.0

0.0 to 100.0

Display range

0.0 to 220.0

Temperature

0℃ to 100℃ (display range: −30℃ to 160℃)

Salinity
conversion
capability

Seawater

0.00% to 4.00%

NaCl

0.0% to 20.0%

Concentration
conversion
capability

NaOH

0.00% to 5.00%

HNO₃

0.00% to 5.00%

H₃PO₄

0.00% to 5.00%

Option 1 to 4

0.00% to 100.00%

Display
resolution

Conductivity
Conversion density

As shown in the measuring and conversion table.

Temperature

0.01℃

Performance

Conductivity

Repeatability
(mS/cm)

Cell constant

0.1 (/cm)

1.0 (/cm)

0.00 to 20.00

Within ±0.5% of the full scale

Within ±0.5% of the full scale

20.0 to 200.0

Within ±1.0% of the full scale

Within ±0.5% of the full scale

200 to 1000

−

Within ±1.0% of the full scale

Condition

response for equivalent input

Linearity
(mS/cm)

Cell constant

0.1 (/cm)

1.0 (/cm)

0.00 to 20.00

Within ±0.5% of the full scale

Within ±0.5% of the full scale

20.0 to 200.0

Within ±1.0% of the full scale

Within ±0.5% of the full scale

200 to 1000

−

Within ±1.0% of the full scale

Condition

response for equivalent input

Performance

Temperature

Repeatability

±0.1℃ (response for equivalent input)

Linearity

±0.5℃ (response for equivalent input)

Transmission
output

Number of output

2 (The negative terminals for transmission outputs are internally connected at the same electric potential)

Output type

4 mA to 20 mA DC: input/output isolated type

Load resistance

Maximum: 900Ω

Linearity

Within ±0.08 mA (output only)

Repeatability

Within ±0.02 mA (output only)

Output range

Output 1

Conductivity or density converted: Free setting within a measuring range.

Output 2

Temperature: Free setting within a range between −30℃ and 160℃

Occasional out for error

Hold or burnout to either 3.8 mA or 21 mA

Transmission hold

In the maintenance mode, transmission signal is held at the latest value or preset value.
In the calibration mode, transmission signal can be alive or held.

Contact
output

Number of output

3

Output type

No-voltage contact output

Contact type

Relay contact; SPDT (1c)

Contact capacity

AC 250 V 3 A, DC 30 V 3 A

Contact
function

R1 and R2

Selectable from upper limit alarm, lower limit alarm, and currently holding of transmission output.
(The contact is closed during alarm operation, opened normally and while the power is down.)

FAIL

Error alarm
(Closed in the normal state, opened in the failure state or while the power is down.)

Alarm setting range

Selectable from conductivity and density

• Setting range: Within a measuring range

• Delay time: 0 to 600 seconds

Contact input

Number of input

2

Contact type

No-voltage "a" contact for open collector

Conditions

ON resistance: 100Ω max.
Open voltage: 24 V DC
Short-circuit current: 12 mA DC max.

Function of input

The input signal use can be changed.
Two inputs for four output current range selection, or, one input for two current range selection and one input for holding.
The display also responds for the range selection by input.

Communication function

Communication type

RS-485

Signal type

2 wire system, isolated from the input circuit
Not isolated from transmission circuit

Temperature
compensation

Temperature element

Platinum resistor: 1 kΩ (0℃)

Compensation method

• Temperature characteristics of NaCl (reference temperature: 5℃ to 95℃)

• Arbitrary temperature coefficient input (reference temperature: 5℃ to 95℃; temperature coefficient: ±3%/℃)

• No temperature compensation
  One of the three ways of compensation is selectable.

Temperature compensation
range

0℃ to 100℃ (However, the compensation calculation is extended lower than 0℃ or higher than 100℃.)

Calibration

Conductivity

Based on parameter input of coefficient for the sensor cell constant.

Self-check

Sensor diagnosis error

Temperature sensor short-circuit, temperature sensor disconnection, and out of the temperature measurement range

Converter

CPU error, ADC error, and memory error

Operating temperature range

−20℃ to 55℃ (without freeze)

Operating humidity range

Relative humidity: 5℃ to 90℃ (without condensation)

Storage temperature

−25℃ to 65℃