HD-200

Field-installation Type Dissolved Oxygen Meter (Four-Wire Transmission, Membrane Type)

HD-200 connects the DO (Dissolved Oxygen) sensor (DO-1100) and measures the DO in the sample water.The measurement method is membrane type polarography method. It is suitable for monitoring DO in wastewater treatment or aquarium for aquaculture.

Measurement range

Dissolved oxygen concentration: 0 - 20 mg/L
Saturation degree: 0 - 200 %
Temperature: 0 - 50 ℃

Segment: Process And Environmental

Division: Process Water

Manufacturing Company: HORIBA Advanced Techno Co., Ltd.

Tough

Responds to harsh conditions at the site process
　　Operating temperature range(Transmitter)：-20 - 55℃
　　Rated power supply voltage：AC 90 - 264 V ±10％ 50/60 Hz
　　Robust aluminum die cast (Protection code：IP65)
CE Marking and FCC Compliance suitable for use at overseas sites

Intelligence

Self-diagnosis of membrane damage and infiltration into the probe
Convenient function to display liquid temperature at the same time（Transmission output available）
Designed to be environmentally friendly (Pb-free) in response to WEEE and RoHS

Easy maintenance

Easy to view big display
Easy operation
Calibration log memory
Screw terminals that do not fall off are used in the terminal block for wiring
On-site membrane replacement as well as whole sensor replacement
Span calibration by air preceded by auto-zeroing (Electrical auto zeroing function)

Product name	Dissolved oxygen converter
Model	HD-200
Combined sensor	5505, 5510 (A bipolar diaphragm type polarography sensor)
Combined probe	DO-1100
Measurement range	Dissolved oxygen concentration		0 mg/L to 20 mg/L (Display range: 0 mg/L to 22 mg/L)
	Saturation degree		0% to 200% (Display range: 0% to 200%)
	Temperature		0℃ to 50℃ (Display range: -10℃ to 110℃)
Display resolution	Dissolved oxygen concentration		0.01 mg/L
	Saturation degree		1%
	Temperature		0.1℃
Performance	Dissolved oxygen concentration	Repeatability	Within ±0.5% of the full scale (response for equivalent input)
	Dissolved oxygen concentration	Linearity	Within ±0.5% of the full scale (response for equivalent input)
	Temperature	Repeatability	±0.5℃(response for equivalent input)
	Temperature	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	Dissolved oxygen concentration: Selection from preset ranges or free range input within measuring range.
	Output range	Output 2	Free setting within a range between -20℃ and 130℃
	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)
	Output capacity		250 V AC 3 A, 30 V DC 3 A (resistance load)
	Contact function	R1 and R2	Selectable from upper limit alarm, lower limit alarm, ON/OFF control, currently holding of transmission output, and cleaning output (The contact is closed during alarm operation, opened normally and while the power is down).
	Contact function	FAIL	Error alarm (Closed in the normal state, opened in the failure state or while the power is down.)
	Alarm setting range		Selectable from dissolved oxygen concentration, and temperature
	Alarm setting range		Setting range: Within the measurement range Delay time: 0 to 600 seconds
	Control setting range		Setting range: 0 mg/L to 20 mg/L Control width: 0.02 mg/L to 200 mg/L(±0.01 to ±0.50 mg/L)
Cleaning output	Number of output points		1
	Output type		Contact output with voltage (output of connected power supply voltage)
	Contact type		Relay contact; SPST (1a)
	Output contact capacity		250 V AC 0.5 A
	External instrument		Solenoid valve for cleaning control
	Settings	Cleaning period	0.1 hours to 168.0 hours
		Cleaning time	2 seconds to 600 seconds
		Hold time	2 seconds to 600 seconds
	Timer accuracy		Within 2 minutes per month
	Description of cleaning operation		One of the following operations. Operation of internal timer only Operation of internal timer and external input command Enable the internal timer only when external input is active. The cleaning trigger signal (The external trigger signal must be longer than 2 seconds)
Contact input	Number of input		1
	Contact type		No-voltage “a” contact of open collector
	Conditions		ON resistance: 100 Ω max. Open voltage: 24 V DC Short-circuit current: 12 mA DC max.
	Contact function		External input for cleaning or transmission holding if cleaner is not attached.
Transmission capability	Communication type		RS-485
Transmission capability	Signal type		2 wire system, isolated from the input circuit Not isolated from transmission circuit
Temperature compensation	Applicable temperature element		Platinum resistor: 1 kΩ (0℃) (The temperature sensor is built into the probe DO-1000.)
	Temperature compensation range		0℃ to 50℃
	Temperature calibration		1 point calibration comparing to reference thermometer
Calibration	Calibration method		Span calibration in the air or DO saturated aquaous solution
	Number of calibration points		Atmospheric calibration: 1 point (Zero electric calibration is carried out automatically) Saturation liquid calibration : 2 points (zero calibration is omitted)
	Additional capabilities		Salinity compensation (0.0% to 5.0%) Automatic detection of calibration failure (Zero error, Sensitivity error) Calibration history (Elapsed days from the last calibration which ever zero or span, zero shift, span sensitivity)
Self-check	Calibration error		Zero calibration error, sensitivity error, outside of temperature calibration range
	Electrode diagnostic error		Sensor error (damage to diaphragm), disconnection of sensor (or damage to sealing), temperature sensor short-circuit, and electric discontinuity of temperature sensor
	meter error		CPU error, CPU error, ADC error, 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℃
Power supply	Rated power supply voltage		100 V to 240 V AC ±10% 50/60 Hz
	Power consumption		15 VA (max)
	Others		With power switch for maintenance use
Compatible standards	CE marking		EMC :EN61326-1 Class A, Industrial electromagnetic environment Safety :EN61010-1 RoHS　:EN50581 9. Industrial monitoring and control instruments
Compatible standards	FCC rules		Part15 Class A
Structure	Installation		Outdoor installation type
	Installation method		Mounted on 50A pole or wall
	Protection code		IP65	IEC60529, JIS C0920
	Case material		Aluminum alloy (coated with epoxy-denatured melamine resin)
	Material of fittings		SUS304
	Material of hood		SUS304 stainless steel (coated with epoxy-denatured melamine resin)
	Material of window		Polycarbonate
	Display element		Reflective monochrome LCD
External dimensions			180 (W) × 155 (H) × 115 (D) mm (excluding mounting brackets)
Mass			Main body: Approx. 3.5 kg; cover and mounting brackets: Approx. 1 kg

*1: The standard for effect on the reading by the electromagnetic field of the radiated radio frequency and by the conducted interference is within the measured dissolved oxygen value ±0.4 mg/L.

*2: When the sensor cable, the transmission cable, or the contact input cable is extended to 30 m or longer, the surge test specified in the EMC directive for CE marking is not applied.

Note

An arrester (spark over voltage: 400 V) is implemented for transmission output, contact input, and communication. However, use a most suitable surge absorption element on the connection lines in accordance with the ambient environment, the situation of equipment installed, and the externally connected equipment.