Introducció
This manual provides detailed instructions for the operation and maintenance of the Traceable Four-Channel Alarm Timer, Model 90225-35. This device is designed for laboratory use, offering precise timing capabilities across four independent channels for various applications.
Característiques
- Calibrated Four-Channel Alarm Timer for Laboratory Use
- Memory returns display to previously programmed countdown time with touch of a button
- Extra-loud alarms sound for 1 minute
- Includes NIST-Traceable certificate from our A2LA accredited (1750.01) calibration laboratory
Configuració
Instal·lació de la bateria
The timer operates on standard batteries. To install or replace batteries:
- Localitzeu el compartiment de la bateria a la part posterior de la unitat.
- Obriu la coberta del compartiment.
- Insert new batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Tanqueu bé la tapa del compartiment de la bateria.

Imatge: Part posterior view of the Traceable Four-Channel Alarm Timer, highlighting the circular battery compartment cover on the right side.
Encès inicial
Upon first power-on or after battery replacement, the display will show the current time or default to 0:00:00. The timer is now ready for operation.
Instruccions de funcionament
Acabatview de Controls

Imatge: Frontal view of the timer, displaying the LCD screen and all control buttons. Buttons include T1, T2, T3, T4, CLOCK at the top, and H, M, S, C, START STOP at the bottom.
The timer features several buttons for various functions:
- T1, T2, T3, T4: Selects the desired timer channel.
- RELOJ: Toggles between clock display and timer display, and used for setting the clock.
- H (Hours): Sets hours for countdown/count-up.
- M (Minutes): Sets minutes for countdown/count-up.
- S (Seconds): Sets seconds for countdown/count-up.
- C (Clear): Clears the set time for the selected channel.
- INICI / PARADA: Starts or stops the selected timer.

Image: Close-up of the 'H' (Hours) and 'M' (Minutes) buttons, which are used for setting time values.

Image: Close-up of the 'START STOP' button, used to initiate or pause timing functions.

Image: Close-up of the 'CLOCK' button, used for setting and viewen l'hora actual.
Configuració d'un temporitzador de compte enrere
- Press one of the channel buttons (T1, T2, T3, or T4) to select the desired timer. The display will show the selected channel indicator.
- Premeu el botó H, M, i S buttons to set the desired countdown time. Each press increments the value. Hold the button for rapid increment.
- Premeu el botó INICI/PARA botó per iniciar el compte enrere.
- When the countdown reaches zero, an extra-loud alarm will sound for 1 minute.
- Per aturar l'alarma, premeu qualsevol botó.
- To recall the previously programmed countdown time for a channel, press the corresponding channel button (T1-T4) after the timer has stopped.
Using as a Count-Up Timer (Stopwatch)
- Press one of the channel buttons (T1, T2, T3, or T4) to select the desired timer.
- Ensure the selected channel is cleared (display shows 0:00:00). If not, press the C botó.
- Premeu el botó INICI/PARA button to begin counting up.
- Premeu el botó INICI/PARA button again to pause the count-up.
- Premeu el botó C button to clear the count-up time.
Configuració del rellotge
- Manteniu premut el botó RELOJ botó fins que la pantalla de temps comenci a parpellejar.
- Utilitza el H, M, i S botons per configurar l'hora actual.
- Premeu el botó RELOJ button again to confirm and exit clock setting mode.
Manteniment
Neteja
Netegeu el temporitzador amb un suau, damp drap. No utilitzeu productes de neteja abrasius ni submergiu la unitat en aigua.
Canvi de bateria
When the display dims or the alarm weakens, it is time to replace the batteries. Refer to the "Battery Installation" section under Setup for instructions.
Resolució de problemes
El temporitzador no respon
- Comproveu la instal·lació de les piles i assegureu-vos que les piles siguin noves.
- Premeu el botó C button to clear any previous settings.
Alarm is too quiet or not sounding
- Substituïu les piles.
- Ensure the timer is not in a location where the sound is muffled.
Display is blank or erratic
- Substituïu les piles.
- If the issue persists after battery replacement, contact customer support.
Especificacions
| Característica | Detall |
|---|---|
| Número de model | 90225-35 |
| Marca | TRAÇABLE |
| Nombre de canals | 4 |
| Dimensions del paquet | 4 x 3.5 x 1.2 polzades |
| Pes de l'article | 0.009 unces (0.26 grams) |
| Color | Negre |
| Fabricant | Cole-Parmer |
| Primer disponible | 31 de gener de 2022 |
Garantia i Suport
This product comes with a NIST-Traceable certificate, ensuring its calibration accuracy. For specific warranty details or technical support, please refer to the documentation included with your purchase or contact Cole-Parmer customer service.
For additional information or support, please visit the manufacturer's weblloc o poseu-vos en contacte amb el seu departament d'atenció al client.





