Delta OHM HD2301.0 Operating Manual Download Page 16

 

HD2301

 

-   16   -

 

V1.7

 

WARNINGS 

1.

 

Probes are not insulated from their external casing; be very careful not to come 

into contact with live parts (above 48V). This could be extremely 

dangerous for the instrument as well as for the operator, who could be 

electrocuted. 

2.

 

Do not expose the probes to gases or liquids that could corrode the material of the 

sensor or the probe itself. Clean the probe carefully after each measurement. 

3.

 

Do not bend the probe connectors or force them upward or downward. 

4.

 

Do not bend or force the contacts when inserting the probe connector into the 

instrument. 

5.

 

Do not bend, deform or drop the probes, as this could cause irreparable damage. 

6.

 

Always select the most suitable probe for your application. 

7.

 

Do not use the temperature probes in presence of corrosive gases or liquids. The 

sensor container is made of AISI 316 stainless steel, while the contact probe 

container is made from AISI 316 stainless steel plus silver. Avoid contact between 

the probe surface and any sticky surface or product that could corrode or damage 

it. 

8.

 

Above 400°C and below –40°C, avoid violent blows or thermal shocks to Platinum 

temperature probes as this could cause irreparable damage. 

9.

 

To obtain reliable measurements, temperature variations that are too rapid must 

be avoided. 

10.Temperature probes for surface measurements (contact probes) must be held 

perpendicular against the surface. Apply oil or heat-conductive paste between the 

surface and the probe in order to improve contact and reduce reading time. 

Whatever you do, do not use water or solvent for this purpose. A contact 

measurement is always very hard to perform. It has high levels of uncertainty and 

depends on the ability of the operator. 

11.Temperature measurements on non-metal surfaces usually require a great deal of 

time due to the low heat conductivity of non-metal materials.  

12.Avoid  taking measurements in presence of high frequency sources, microwave 

ovens or large magnetic fields; results may not be very reliable. 

13.Clean the probe carefully after use. 
14.The instrument is water resistant and IP67, but should not be immersed in water. 

The probe connectors must be fitted with sealing gaskets. Should the instrument 

fall into the water, check for any water infiltration. Gently handle the instrument in 

such a way as to prevent any water infiltration from the connectors' side. 

Summary of Contents for HD2301.0

Page 1: ...Operating manual Thermohygrometer HD2301 0 www deltaohm com English Keep for future reference...

Page 2: ...IRE Pt1000 PROBES 13 DIRECT CONNECTION OF 4 WIRE Pt100 SENSORS 15 WARNINGS 16 INSTRUMENT SIGNALS AND FAULTS 17 LOW BATTERY WARNING AND BATTERY REPLACEMENT 18 WARNING ABOUT BATTERY USE 18 INSTRUMENT ST...

Page 3: ...t calculates and displays the following data absolute humidity dew point partial vapour pressure The probes are fitted with the automatic detection SICRAM module with the factory calibration settings...

Page 4: ...HD2301 4 V1 7 Thermohygrometer HD2301 0...

Page 5: ...the measurement display during normal operation in the menu increases the current value 8 UNIT MENU key it allows selection of the unit of measurement when pressed together with the DATA key it allow...

Page 6: ...turning on enables all display segments for a few seconds starts an Auto test including the detection of the probe connected to the input and sets the instrument ready for normal measurement MIN cm m...

Page 7: ...the acquisition of new samples by pressing this key again the minimum MIN value is displayed by pressing this key a third time the average AVG value is displayed The acquisition frequency is once a se...

Page 8: ...erature measurement blinks Use the and arrows if you wish to change the temperature display from degrees Celsius C to degrees Fahreneit F or vice versa Confirm by pressing the UNIT key or wait for the...

Page 9: ...probe is configured by the instrument and cannot be modified by the user If the direct 4 wire Pt100 probes and the Pt1000 probes that are not manufactured by Delta OHM are connected to the instrument...

Page 10: ...he humidity probes are humidity and temperature combined probes the humidity sensor is a capacitative type sensor the temperature sensor is a Pt100 The instrument measures relative humidity RH and tem...

Page 11: ...ops of solution inside the measuring chamber dry them with some blotting paper 5 Insert the probe in the container making sure the cap at the base is screwed well The measuring chamber must be closed...

Page 12: ...er cannot reach its saturation anymore For the saturated solutions at 75 RH check that the salt is not dry crystallized in order to reach the saturation it needs to be wet 5 Storage of the saturated s...

Page 13: ...e NOTE when measuring the temperature on frozen blocks it is convenient to use a mechanical tool to bore a cavity in which to insert the tip probe In order to perform a correct contact measurement the...

Page 14: ...tin bead for some type of sensors 1 2 3 4 Pt100 3 wires Pt1000 Ni1000 Not Used Caution Before welding pass the probe cable through the fairlead and gasket 6 Weld the wires as shown in the table Senso...

Page 15: ...oldered directly to the pins of the flying female connector without making use of the TP47 board The 4 wires of the Pt100 sensors have to be soldered as indicated in the figure on the left In order to...

Page 16: ...C avoid violent blows or thermal shocks to Platinum temperature probes as this could cause irreparable damage 9 To obtain reliable measurements temperature variations that are too rapid must be avoide...

Page 17: ...This appears if the probe has already been detected by the instrument but is disconnected At the same time an intermittent beep is issued FUNC CLRD Max min and average values cleared NEW PROBE DET Thi...

Page 18: ...the instrument back on To replace the batteries proceed as follows 1 switch the instrument off 2 unscrew the battery cover counter clockwise 3 replace the batteries 3 1 5V alkaline batteries type AA...

Page 19: ...nt in places where humidity is high the instrument may be exposed to direct sunlight the instrument may be exposed to a source of high temperature the instrument may be exposed to strong vibrations th...

Page 20: ...onal safety of the instrument can only be guaranteed under the environmental and electrical operating conditions that are in specified in chapter TECHNICAL CHARACTERISTICS Do not use or store the prod...

Page 21: ...condensation Protection degree IP67 Power Batteries 3 1 5V type AA batteries Autonomy 200 hours with 1800 mAh alkaline batteries Power absorbed with instrument off 20 A Connections Input for probes 8...

Page 22: ...ct 70 C 250 C TP49AP I Penetration 70 C 250 C TP875 I Globe thermometer 150 mm 30 C 120 C TP876 I Globe thermometer 50 mm 30 C 120 C TP87 O Immersion 50 C 200 C Common characteristics Resolution 0 01...

Page 23: ...40 C 150 C 0 3 C HP475ACR Pt100 0 100 RH 40 C 150 C 0 3 C HP475AC1R Pt100 0 100 RH 40 C 180 C 0 3 C HP477DCR Pt100 0 100 RH 40 C 100 C 0 3 C HP478ACR Pt100 0 100 RH 40 C 150 C 0 3 C HP480 Pt100 0 100...

Page 24: ...gth 520 mm HP478ACR Combined probe RH and temperature Connection cable length 5 m Stainless steel stem 14 x 130 mm HP480 RH and Temperature probe for compressed air systems Supplied complete with SICR...

Page 25: ...s TP473P O Penetration probe sensor Pt100 Stem 4 mm length 150 mm Cable length 2 metres TP474C O Contact probe sensor Pt100 Stem 4 mm length 230 mm contact surface 5 mm Cable length 2 metres TP475A O...

Page 26: ...00 direct 4 wires Probe s stem 3 mm length 70 mm 4 wire connection cable with connector length 2 metres TP87 1000 O Immersion probe sensor Pt1000 Probe s stem 3 mm length 70 mm 4 wire connection cable...

Page 27: ......

Page 28: ...warranty included in the manual of the product For any dispute the competent court is the Court of Padua The Italian law and the Convention on Contracts for the International Sales of Goods apply TECH...

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