PCE Instruments PCE-SLT, PCE-SLT-TRM, PCE-SLT-TRM-24V, PCE-SLT-TRM-24V-ICA, PCE-SLT-ICA Users guide

© PCE Instruments

PCE-SLT Sound Level Meter (Including Transmitter PCE-SLT-TRM)

User Manual

User manuals in various languages (français,

italiano, español, português, nederlands, türk, polski,

русский, 中文) can be found by using our

product search on: www.pce-instruments.com

Last change: 13 August 2024

v1.0

English

© PCE Instruments

Contents

1 Safety notes ........................................................................................... 1

2 Specifications ........................................................................................ 2

3 Dimensions ............................................................................................ 3

4 Description transmitter ........................................................................ 4

5 Display description ............................................................................... 5

6 Initial commissioning ........................................................................... 7

6.1 Connecting the transmitter ............................................................................................... 7

6.2 Connecting the display ..................................................................................................... 7

7 Set measurement ranges ..................................................................... 7

8 Calibration ............................................................................................. 7

9 Alarm setting (control) ......................................................................... 7

10 Advanced menu .................................................................................... 8

10.1 Decimal point shift ............................................................................................................ 8

10.2 4 mA Parameter ............................................................................................................... 8

10.3 20 mA parameter ............................................................................................................. 8

10.4 Filter function ................................................................................................................... 8

10.5 Hysteresis for the control message................................................................................... 8

10.6 Hysteresis for the alarm function ...................................................................................... 9

10.7 Offset ............................................................................................................................... 9

10.8 Gain setting ...................................................................................................................... 9

10.9 Set RS232 unit ................................................................................................................10

11 RS232 ................................................................................................... 11

11.1 RS232 settings ................................................................................................................11

11.2 RS232 protocol ...............................................................................................................12

12 Reset system ....................................................................................... 12

13 Contact ................................................................................................. 12

14 Disposal ............................................................................................... 12

© PCE Instruments

1

1 Safety notes

Please read this manual carefully and completely before you use the device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.

• The device must only be used as described in this instruction manual. If used otherwise,
this can cause dangerous situations for the user and damage to the meter.

• The instrument may only be used if the environmental conditions (temperature, relative

humidity, …) are within the ranges stated in the technical specifications. Do not expose

the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

• Do not expose the device to shocks or strong vibrations.

• The case should only be opened by qualified PCE Instruments personnel.

• Never use the instrument when your hands are wet.

• You must not make any technical changes to the device.

• The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,

no abrasives or solvents.

• The device must only be used with accessories from PCE Instruments or equivalent.

• Before each use, inspect the case for visible damage. If any damage is visible, do not

use the device.

• Do not use the instrument in explosive atmospheres.

• The measurement range as stated in the specifications must not be exceeded under

any circumstances.

• Non-observance of the safety notes can cause damage to the device and injuries to
the user.

We do not assume liability for printing errors or any other mistakes in this manual.
We expressly point to our general guarantee terms which can be found in our general terms of

business.

© PCE Instruments

2

2 Specifications

Sound sensor

Measuring range

30 ... 130 dB in three ranges

Resolution

0.1 dB

Measuring accuracy

±1.5 dB

Frequency weighting

A

Power supply

via transmitter

Cable length

1.5 m

Wall bracket

screwable (included in the scope of delivery)

Envioronmental conditions

max. 80 % RH / 0 ... +50 °C / 32 ... 122 °F

Microphone

1/2" precision electret microphone

Standard

IEC 61672 Class II

Transmitter

Housing

ABS plastic

Power supply (depending on model)

90 ... 260 VAC
24 V DC (max. 1,5 A)

Calibration

adjustable via grub screw

Output

4 ... 20 mA

Protection class

IP 50

Environmental conditions

max. 80 % RH / 0 ... +50 °C / 32 ... 122 °F

Digital display

Input signal from transmitter

4 ... 20 mA

Display

-1999 ... 9999 (1 ... 3 decimal places, depending
on measured value / user-selectable)

Programming data (decimal place,
limit value...)

are stored in the device
Control output

relay output: 0.5 A / 240 VAC

Alarm output

relay output: 0.5 A / 240 VAC

Power supply

90 ... 260 ACV / 50 ... 60 Hz

Dimensions / panel cut-out according
to DIN

92 (+ 0.8) mm x 45 (+ 0.5) mm
Weight

approx. 250 g / 0.56 lb

Envioronmental conditions

max. 80 % RH / 0 ... +50 °C / 32 ... 122 °F

Protection class

IP 60

© PCE Instruments

3

3 Dimensions

© PCE Instruments

4

4 Description transmitter

5 and 6 Supply voltage

3.1 Calibration potentiometer

7 and 8 Current output

3.2 Power light

1 to 4 Not used

3.3 Sensor connection (female)

3.4 Connection to mounting plate

3.5 Fixing holes for wall mounting

3.6 Sensor connection (male)

3.7 Sensor

3.8 Transmitter cover

3.9 Setting the measured value ranges

3.10 Light (measured value too low)

3.11 Light (measured value too high)

© PCE Instruments

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5 Display description

3.1 Display

3.2 Measured value display (indicator)

3.3 Value set display (indicator)

3.4 SET key

3.5 Decrease key

3.6 Increase key

3.7 Control display

3.8 Alarm display

3.9 Terminal strip

3.10 Mounting bracket

3.11 RS232 interface

© PCE Instruments

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T1 - T2 Power supply
T3 - T4 Control relay
T5 - T6 Alarm relay
T7 - T8 Power supply 24 VDC
T9 - T14 Not connected
T15 - T16 4 ... 20 mA interface

© PCE Instruments

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6 Initial commissioning

6.1 Connecting the transmitter

First mount the connection terminal to a designated DIN rail or screw it to a designated surface.
First connect the mains voltage. To do this, use connection 5 and 6 on the connection terminal.
Ensure that the connection cable is initially voltage-free.
Then connect the transmitter to the connection terminal.
Finally, connect the sensor to the transmitter.

Note: For the 24 V version of the transmitter (PCE-SLT-TRM-24V), ensure that the supply ground
is galvanically isolated from the signal ground.

6.2 Connecting the display

First mount the display using the mounting bracket.
For the power supply, connect the mains cable to the T1 and T2 connections on the display
connection terminal. Ensure that the mains supply cable is initially voltage-free.
Now connect the transmitter to the display. To do this, connect pin 7 to T15 (positive) and pin 8
to T16 (negative).

7 Set measurement ranges

First open the transmitter cover. Then remove the internal rubber seal.
The switches for setting the measurement range are now accessible. Use the table on the inside
of the transmitter cover to set the measurement range. Then cover the switches again with the
rubber seal and close the transmitter cover.

8 Calibration

Open the transmitter cover. Turn the potentiometer labelled "SPAN" to adjust the measured value.
To make changes to the potentiometer, use a small slotted screwdriver.

9 Alarm setting (control)

The display has two separate alarm relays. A distinction is made between control and alarm. The
difference is that when the alarm switches, the display also flashes, which is not the case with the
control.

To programme the limit values of the two functions, proceed as follows:
First press the "SET" key briefly. “CtLo" appears on the display to set the lower control value. You
can now set this value directly using the arrow keys. Press the "SET" key to confirm this value
and return directly to the menu.
To set other parameters, press the "SET" key continuously until you have reached your
parameter. The menu is organised as follows.

CtLo → lower control value
CtHi → upper control value
ALLo → lower alarm value
ALHi → upper alarm value

Once you have set all the parameters, press the "SET" key again to exit the menu.

© PCE Instruments

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10 Advanced menu

To access the extended menu, press the "SET" key for two seconds.
This menu is organised as follows:

dPSt Decimal point shift
4-A4 mA parameter
20-A20 mA parameter
FiLt Filter function
CtHY Hysteresis for the control function
ALHY Hysteresis for the alarm function
oFSt Offset
GAin Gain setting
Unit Set RS232 unit

10.1 Decimal point shift

To move the decimal point, first press the "SET" key for two seconds. “dPSt" appears on the
display. Now press the arrow keys to access this configuration mode and to move the decimal
point. Press the "SET" key to save the setting.

10.2 4 mA Parameter

To change the parameterisation for 4 mA, first press the "SET" key for two seconds. “dPSt"
appears on the display. Press the "SET" key again. "4-A" now appears on the display. Now press
the arrow keys to access this configuration mode and to change the parameterisation for 4 mA.
Press the "SET" key to save the setting.

10.3 20 mA parameter

To change the parameterisation for 20 mA, first press the "SET" key for two seconds. “dPSt"
appears on the display. Now press the "SET" key twice. The display now shows "20-A". Now
press the arrow keys to access this configuration mode and to change the parameterisation for
20 mA. Press the "SET" key to save the setting.

10.4 Filter function

To change the parameterisation for the filter function, first press the "SET" key for two seconds.
“dPSt" appears on the display. Now press the "SET" key three times. “FiLt" now appears on the
display. Now press the arrow keys to access this configuration mode and to change the
parameterisation for the filter function. The higher the value, the more filtering takes place. Press
the "SET" key to save the setting.

10.5 Hysteresis for the control message

To change the parameterisation of the hysteresis for the control message, first press the "SET"
key for two seconds. “dPSt" appears on the display. Now press the "SET" key four times. “CtHY"
now appears on the display. Now press the arrow keys to access this configuration mode and to
change the parameterisation for the hysteresis. Press the "SET" key to save the setting.

© PCE Instruments

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10.6 Hysteresis for the alarm function

To change the parameterisation of the hysteresis for the alarm function, first press the "SET" key
for two seconds. “dPSt" appears on the display. Now press the "SET" key five times. “ALHY" now
appears on the display. Now press the arrow keys to access this configuration mode and to
change the parameterisation for the hysteresis. Press the "SET" key to save the setting.

10.7 Offset

To change the parameterisation for the offset, first press the "SET" key for two seconds. dPSt"
appears on the display. Now press the "SET" button six times. The display now shows "oFSt".
Now press the arrow keys to access this configuration mode and to change the parameterisation
for the offset. Press the "SET" key to save the setting.

10.8 Gain setting

To change the parameterisation for the gain, first press the "SET" key for two seconds. “dPSt"
appears on the display. Now press the "SET" key seven times. “GAin" now appears on the display.
Now press the arrow keys to access this configuration mode and to change the parameterisation
for the gain. Press the "SET" key to save the setting.

© PCE Instruments

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10.9 Set RS232 unit

To change the unit for the RS232 interface, first press the "SET" key for two seconds. “dPSt"
appears on the display. Now press the "SET" key eight times. The display will now show "Unit".
Now press the arrow keys to access this configuration mode and to change the parameterisation
for the unit. The correct value can be found in the following table.

00 = No unit

33 = KHz

66 = mF

01 = C

34 = DCV

67 = MHz

02 = F

35 = DCµA

68 = uH

03 = %

36 = DCA

69 = dBm

04 = %RH

37 = DCmA

70 = Red

05 = pH

38 = ohm

71 = Gren

06 = %O2

39 = Kohm

72 = Blue

07 = mg/L

40 = Mohm

73 = Stau

08 = m/s

41 = mH

74 = mSEC

09 = knot

42 = H

75 = uSEC

10 = km/h

43 = nF

76 = SEC

11 = ft/m

44 = µF

77 = Kgc2

12 = ml/h

45 = hFe

78 = mmHg

13 = uS

46 = DIO

79 = mH2O

14 = mS

47 = WATT

80 = inHg

15 = Lux

48 = KWATT

81 = Kgcm

16 = Ftcd

49 = ACmV

82 = LBin

17 = dB

50 = ACV

83 = N-cm

18 = mV

51 = ACµA

84 = CMM

19 = PPM

52 = ACA

85 = CFM

20 = mg

53 = ACmA

86 = mbar

21 = Tesl

54 = COSƟ

87 = Pa

22 = bar

55 = Kg

88 = kPa

23 = PSI

56 = Lb

89 = uHg

24 = cmHg

57 = gram

90 = Torr

25 = iH20

58 = oz

91 = hPa

26 = ATP

59 = NewT

92 = m/s2

27 = RPM

60 = m/m

93 = mm/s

28 = in/m

61 = Hour

94 = mm

29 = cm/m

62 = Min

95 = cm/s

30 = COUT

63 = VA

96 = inch

31 = Hz

64 = KVA

97 = FtS2

32 = DEG

65 = KWHr

98 = in/s

Press the "SET" key to save the setting.

© PCE Instruments

11

11 RS232

The PCE-SLT has an RS232 interface that can be connected via a 3.5 mm jack.
The jack plug must be constructed as follows:

11.1 RS232 settings

To receive the data correctly, set the COM connection on your PC as follows:

© PCE Instruments

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11.2 RS232 protocol

The display transmits a 16-digit protocol. This is structured as follows:

D15

Start word

D14

4

D13

Value too high = 1
Value too low = 2

D12 and D11

Unit, see 10.9

D10

Positive polarity = 0
Negative polarity = 1

D9

The specified value indicates the position of the decimal point from left
to right. Values from 0 ... 3 are possible.

D8 ... D1

The specified values show the measured value from D8 to D1. If the
measured value is 1234, for example, the following is sent from D8 to
D1:
00001234

D0

End word

12 Reset system

To reset the system, proceed as follows.
Press and hold the "SET" and the "Decrease" key for five seconds. "rSt" flashes on the display.
The system has now been reset. After this, the device returns to measuring mode. After the reset,
the device may need to be re-parameterised.

13 Contact

If you have any questions, suggestions or technical problems, please do not hesitate to contact
us. You will find the relevant contact information at the end of this user manual.

14 Disposal

For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament
applies. Due to the contained pollutants, batteries must not be disposed of as household waste.
They must be given to collection points designed for that purpose.

In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use
them or give them to a recycling company which disposes of the devices in line with law.

For countries outside the EU, batteries and devices should be disposed of in accordance with
your local waste regulations.

If you have any questions, please contact PCE Instruments.

© PCE Instruments

13

PCE Instruments contact information

Germany France Spain

PCE Deutschland GmbH PCE Instruments France EURL PCE Ibérica S.L.
Im Langel 26 23, rue de Strasbourg Calle Mula, 8
D-59872 Meschede 67250 Soultz-Sous-Forets 02500 Tobarra (Albacete)
Deutschland France España
Tel.: [phone] Téléphone: [phone] Tel. : [phone]
Fax: [phone] Numéro de fax: [phone] Fax: [phone]
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol

United Kingdom Italy Turkey

PCE Instruments UK Ltd PCE Italia s.r.l. PCE Teknik Cihazları Ltd.Şti.
Trafford House Via Pesciatina 878 / B-Interno 6 Halkalı Merkez Mah.
Chester Rd, Old Trafford 55010 Loc. Gragnano Pehlivan Sok. No.6/C
Manchester M32 0RS Capannori (Lucca) 34303 Küçükçekmece - İstanbul
United Kingdom Italia Türkiye
Tel: [phone] Telefono: [phone] Tel: [phone]
Fax: [phone] Fax: [phone] Faks: 0212 705 53 93
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/english www.pce-instruments.com/italiano www.pce-instruments.com/turkish

The Netherlands United States of America Denmark

PCE Brookhuis B.V. PCE Americas Inc. PCE Instruments Denmark ApS
Institutenweg 15 1201 Jupiter Park Drive, Suite 8 Birk Centerpark 40
7521 PH Enschede Jupiter / Palm Beach 7400 Herning
Nederland 33458 FL Denmark
Telefoon: [phone] USA Tel.: [phone]
[e-mail] Tel: [phone] [e-mail]
www.pce-instruments.com/dutch Fax: [phone] www.pce-instruments.com/dansk
[e-mail]
www.pce-instruments.com/us