Sanitary Pressure Transmitter (2-wire Type / Terminal Box Type) "Changeability type of output 4 to 20mA scaling" VHST series | VALCOM CO.,LTD. [Specialized manufacturer of Digital Pressure Meters and Load Cells]

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Sanitary Pressure Transmitter (2-wire Type / Terminal Box Type)
"Changeability type of output 4 to 20mA scaling"
VHST series(Terminal Box Type)
50kPa–3MPa

* The photo shows a ferrule 2S type.

Output 4-20mA (2 wire system) scaling function. (Supports negative pressure, compound pressure and reverse output.)
IP67 construction for environmental resistance.
Pressure port with higher strength.
Safe and reliable construction with no sealed liquid.
Standard functions
●Damping ●Loop check function ●FIX zero
●Quick zero-adjustment ●Maximum/Minimum monitoring function
●Various functions such as output burnout at error.

Measured medium	Liquor, milk beverage, seasoning, pure water, chemical or other media. (These vary according to sensor materials)
Pressure type	Measurement at positive pressure, compound pressure, and negative pressure is possible.
Pressure range	Can be specified within the range of 50 kPa to 3 MPa of rated capacity.
Output type	4–20mA (2-wire) Output scaling variable Output scaling can be changed within the range of 10 to 100% (Ferrule 15A: 30 to 100%) of the rated capacity.

Specifications1(Sensor assembly)

Pressure Port Type/Size	ISO Ferrule / VARIVENT® / ISO Cap-nut / Other custom
Rated capacity	50kPa–3MPa (Ferrule 15A: 1MPa)
Pressure Port Materal	Sensor: SUS316L, Equivalent to Hastelloy C-276, SUS329J4L
Wetted part surface finish	Depending on pressure port material
Overload limit	400%R.C. (Ferrule 15A, Rated capacity 3MPa: 150%R.C.)
Destruction point	1000%R.C. (Ferrule 15A,Rated capacity 3MPa: 150%R.C.)

Specifications2 (Amplifier part + Sensor assembly)

Accuracy at room temperature(*1) (Including Nonlinearity, Hysteresis, and repeatability)	±0.5%F.S.±1digit. Scaling in 10–20%R.C.: ±1%F.S.±1digit. Ferrule 15A 40–100%: ±1%F.S.±1digit. Ferrule 15A 30–40%: ±2%F.S.±1digit.
Temperature compensation range (Wetted part)	−5–150°C (Measurement pressure medium)
Safe temperature range (Wetted part)	−5–150°C (Measurement pressure medium)
Temperature effect on zero balance	±0.5%R.C./10°C or less Ferrule 15A: ±0.7%R.C./10°C or less
Temperature effect on load	±0.5%R.C./10°C or less Ferrule 15A: ±0.7%R.C./10°C or less
Ambient temperature and humidity range	Temperature: 0–50°C (Amplifier part, Display part) Humidity: 0–90%RH (No condensation)
Material	Aluminum die casting(Case) SUS304(Radiating fin)
IP Rating	Equivalent to IP67
Mass	Approx. 1100g(Including Sensor assembly/ISO Ferrule2S)
Accessories	Operating manual 1 copy, Test report, Cable gland Waterproofing protective plug for exhaust

(*1)For the ferrule type, zero adjustment is to be made after the clamp is tightened.

Model Selection

Example

Selection	Check	Model	Specifications
1.Model	○	VHST	High temperature type: Temperature range of wetted parts -5–150°C
2.Display/Analog output	○	A6V	4–20mA(2-wire system) Output scaling variable Response: Damping (Soft filter) Default 2 seconds (0.5Hz) Display part inside: 7 segment 4digit LCD display Character height: Approx. 5.2 mm
3.Calibration(*3)		Positive pressure, Negative pressure	④Specify the rated capacity and unit. *In case of negative pressure, put the calibration range value in parentheses.
3.Calibration(*3)		Compound pressure	Compound pressure(Calibration range with plus/minus sign)(*2)
4.Rated capacity		005	50kPa Calibration range [50.0kPa]
		010	100kPa Calibration range [100.0kPa]
		020	200kPa Calibration range [200kPa] Compound pressure: Positve pressure-oriented[(-100–200)kPa](*2)
		021	200kPa Calibration range [(-100–200)kPa](*2) (Compound pressure: Negative pressure-oriented)
		030	300kPa Calibration range [300kPa] Compound pressure: Positve pressure-oriented[(-100–300)kPa](*2)
		031	300kPa Calibration range [(-100–300)kPa](*2) (Compound pressure: Negative pressure-oriented)
		050	500kPa Calibration range [500kPa]
		100	1000kPa Calibration range [1000kPa]
		300	3MPaCalibration range [3.00MPa] (Made-to-order) (Safe overload 150%R.C. / Box nut, Screw mount type / SUS316L only)
5.Pressure Port Type/Size		F0(*4)	Ferrule 15A ④Only rated capacity 100 can be selected ⑥Only wetted material J4L can be selected	Positive pressure only
		F1	ISO Ferrule 1.5S
		F2	ISO Ferrule 2S
		F3	ISO Ferrule 2.5S [Made-to-order]
		F4	ISO Ferrule 3S [Made-to-order]
		F6	ISO Ferrule 4S [Made-to-order]
		V50A	VARIVENT® DN50 [Made-to-order]
		V65A	VARIVENT® DN65 [Made-to-order]
		V80A	VARIVENT® DN80 [Made-to-order]
		V100A	VARIVENT® DN100 [Made-to-order]
		R1	ISO Cap-nut 1.5S [Made-to-order]with Hexagon nut(HEX61)
		R2	ISO Cap-nut 2S [Made-to-order]with Hexagon nut(HEX76)
		M0	Single screw mount type Dedicated O-ring 1 pc attached
		M1	with JIS20K50A flange Dedicated O-ring 1 pc attached
		M2	with JIS20K80A flange Dedicated O-ring 1 pc attached
6.Pressure port material		Blank	SUS316L Electrolytic polish(Rz0.7µm, Ra0.2µm) to all the rated apacity(④) ⑤Supports all pressure port type/size.(Excluding F0)
		HS1	Hastelloy C-276 Electrolytic polish(Rz0.7µm, Ra0.2µm) ④Select from the rated capacity of 030, 050, 100 ⑤Select from the type and size of F1, F2, F3, M0	[Made-to-order] Negative pressure and compound pressure are not supported
		J4L(*5)	SUS329J4L Buffing(#400) ④Select from the rated capacity of 030, 050, 100 ⑤Select from the type and size of F0, F1, F2, F3, M0
7.Limitation		H	400%R.C.(3MPa and Ferrule 15A are not selectable)
7.Limitation		Blank	150%R.C.(3MPa and Ferrule 15A only)
8.Power supply		4	DC24V(DC8.82–26.5V)Current consumption Approx. 23mA
9.CE		Blank	Without CE
9.CE		CE	With CE

(*2)In case of calibration for compound pressure, calibration is performed only for the positive pressure, and only measurement data are given for the negative pressure. In this case, acceptance criterion is within ±1%R.C. When focusing on the negative pressure, it is also possible to perform calibration for the negative pressure and to provide only measurement data (within ±1%R.C.) according to the request from the customer.
Regarding calibration, specify 020, 030 (focus on positive pressure) or 021, 031 (focus on negative pressure) in ④ above when placing an order.
(*3)Output range is factory-adjusted to the specified rate in the range 10 to 100%, with the calibration range set at 100%. (Option)
<Example> When using a rated capacity of 100kPa and outputting analog signal of 4 to 20mA for the pressure of 0 to 70kPa, specify VSHT-SC1: Differential pressure 0 to 70kPa.
(*4)Please also check the Ferrule 15A specifications.
(*5)In case of Ferrule 15A: Electro polish (Rz0.7µm, Ra0.2µm)

External dimensions (Unit: mm)

*Click here for presure port type and size.

Perform venting with the included waterproof plug for exhaust port.
Always install it when using the product and make sure the vent hole is not blocked.
(See instruction manual for details.)

[Note]
According to the use environment, exchange the cable gland and the waterproof plug with each other.
They are removable.
Recommended tightening torque: 2.2–3.0N·m, Spanner (width across flats): HEX.27

Precautions for Wiring Work

Use shielded cable not longer than 10 m.
To minimize the risk of electric shock or fire, always shut off power before starting wiring work.
Either cable inlet hole may be used to route through the cable.
This product is IP67 rated. To maintain the IP67 rating, use the cable gland and waterproof plug for exhaust port.
Waterproof plug for exhaust port is used for venting at the opposite cable inlet hole. Be sure to install it and make sure the vent hole is not blocked.
To prevent the effect of noise, it is recommended to ground the FG terminal. However, grounding can cause noise depending on the use environment. In such a case, leave the FG terminal ungrounded.
When routing the cable, hang it down once to a position lower than the cable inlet port as shown below.

Safe load resistance

Maximum allowable load resistance is 690Ω at 24V DC.
Relationship between the supply voltage and the load resistance is shown in the below graph.

Sanitary Pressure Sensor